ISRIC Reports / Working Papers (1982-1999)
► 2000 - present
► 1982 - 1999
1999
Oldeman LR et al. 1999 (ed.). Regional Implementation Workshop "Establishment of an Integrated Land Resources Information System for the Conservation and Rehabilitation of Land Resources in West Africa" (WALRIS workshop, 23-25 February 1999, Cotonou, Benin). Report 99/01, ISRIC, Wageningen PDF
1998
Kauffman S and Valencia Ramos M 1998. A farmer-assisted soil survey and land evaluation in the Peruvian Andes: a case study for the San Marcos-Cajamarca and Quilcas-Huancayo ILEIA project areas. Report 98/03, Soil Department of the Universidad Nacional de la Molina, Lima, and ISRIC, Wageningen PDF
Kauffman JH, Chen Qiubo and van Engelen VWP 1998. Sustainable Land Management for Agricultural Production in Hainan Province (HAINAN-SOTER). User Group Enquiry for the Hainan Soil and Terrain Information System. Report 98/02, ISRIC, Wageningen PDF
Oldeman LR 1988. Soil degradation: a threat to food security? Report 98/01, ISRIC, Wageningen PDF
1997
Tempel P 1997. Global and national soils and terrain digital databases (SOTER), scale 1:2,500,000. Attribute database user manual adapted for SOVEUR project. Report 97/09, ISRIC, Wageningen PDF
Van Lynden GWJ 1997. Guidelines for the assessment of soil degradation in Central and Eastern Europe. Report 97/08b (rev. ed.), ISRIC, Wageningen PDF
Batjes NH 1997. Methodological framework for assessment and mapping of the vulnerability of soils to diffuse pollution at a continental level. Report 97/07, ISRIC, Wageningen PDF
Batjes NH and Van Engelen VWP 1997. Guidelines for the compilation of a 1:2,500,000 SOTER database.Report 97/06, ISRIC, Wageningen PDF
Kauffman S and Valencia Ramos M 1997. ILEIA study, Peru (Draft report). Report 97/05, ISRIC, Wageningen (Ultimately published as Report 98/03 PDF)
Asiamah RD, Senayah JK, Adjej-Gyapong T and Spaargaren OC 1997. Ethno-pedological surveys in the semi-arid savanna zone of Northern Ghana, an ILEIA-initiated project. Report 97/04, Soil Research Institute (Kumasi) and ISRIC, Wageningen PDF
Concepcion RN and Batjes NH 1997. A farmers-guided classification system for the Philippines: A case study for barangays Triala and Santa Rosa, Nueva Ecija, Central Luzon. Report 97/03, Bureau of Soil and Water Management (BSWM), Manila and ISRIC, Wageningen PDF
ISRIC 1997. Report 97/02 - no longer available
Mantel S and Van Engelen VWP 1997. The impact of land degradation of food productivity: case studies of Uruguay, Argentina, and Kenya. Report 97/01, United Nations Environment Programme (UNEP), National Institute of Public Health and Environment (RIVM) and ISRIC, Wageningen PDF (vol.1) PDF (vol.2)
1996
Batjes NH, 1996. Global assessment of land vulnerability to water erosion on a ½º by ½º grid. Work. Pap. 96/08 , ISRIC, Wageningen PDF
Tempel P, Batjes NH and Van Engelen VWP 1996. IGBP-DIS data set for pedotransfer function development. Work. Pap. 96/06 , ISRIC, Wageningen PDF
Batjes NH 1996. Documentation to ISRIC-WISE global data set of derived soil properties on a ½ by ½ grid. Work. Pap. 96/05, ISRIC, Wageningen PDF
Batjes NH 1996. A qualitative assessment of water erosion risk using 1:5 M SOTER data: An application for Northern Argentina, South-East Brazil and Uruguay. Work. Pap. 96/04, ISRIC, Wageningen PDF
Oldeman LR and van Lynden GWJ 1996. Revisiting the GLASOD methodology. Work. Pap. 96/03, ISRIC, Wageningen
Oldeman LR 1996. Global and regional databases for development of state land quality indicators: The SOTER and GLASOD approach. Work. Pap. 96/02, ISRIC, Wageningen PDF
Tempel P 1996. Evaluating the soil erodibility factor as calculated with SWEAP. Work. Pap. 96/01, ISRIC, Wageningen
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1995
Dijkshoorn KDH 1995. Water erosion assessment using reference soils opf the ISIS database. Work. Pap. 95/14, ISRIC, Wageningen PDF
Mantel S and Kauffman JH 1995. Agricultural suitability of reference soils - The Automated Land Evaluation System applied to the ISRIC Soil Information System. Work. Pap. 95/13, ISRIC, Wageningen PDF
Oldeman LR, van Lynden GWJ and Van Engelen VWP 1995. An international methodology for soil degradation assessment and for a soils and terrain database (SOTER ( Paper presented at the Regional Workshop on Assessment and Monitoring of Land Degradation Cairo, 13-15 May 1995), Work. Pap. 95/12, ISRIC, Wageningen. PDF
Batjes NH 1995. World Soil Carbon Stocks and Global Change. Work. Pap. 95/11, ISRIC, Wageningen PDF
Batjes NH 1995. A homogenized soil data file for global environmental research: A subset of FAO, ISRIC and NRCS profiles (Version 1.0). Work. Pap. 95/10b, ISRIC, Wageningen PDF
Kauffman JH, Sombroek WG and Mantel S 1995. Soils of tropical rainforests: Characterization and major constraints of dominant soils. Work Pap. 95/09, ISRIC, Wageningen PDF
Hartemink AE and Wienk JF 1995. Sisal production and soil fertility decline in Tanazania. Work. Pap. 95/08, ISRIC, Wageningen PDF
Hartemink AE and Bridges EM 1995. The Impact of Parent Material on Soil Fertility Degradation in the Coastal Plain of Tanzania. Work. Pap. 95/07, ISRIC, Wageningen PDF
Peters WL and van Engelen VWP 1995. Guia para la Recopilacion de la base de datos SOTER a un escala de 1:5 M (Ed. revista). Work. Pap. 95/06, ISRIC, Wageningen PDF
Hartemink AE, Osborne JF and Kips PhA 1995. Soil Fertility and Fallow Effects in Ferralsols and Acrisols of Sisal Plantations in Tanzania. Work. Pap. 95/05, ISRIC, Wageningen PDF
Oldeman LR 1995. Worls Soils and Terrain Digital Database (SOTER): Past, present and future. Work. Pap. 95/04, ISRIC, Wageningen PDF
Mantel S 1995. The automated land evaluation system applied to SOTER - with an example for Kenya. Work. Pap. 95/03, ISRIC, Wageningen PDF
van Lynden, GWJ 1995. Guidelines for the assessment of the status of human-induced soil degradation in South and South-East Asia. Work. Pap. 95/02, ISRIC, Wageningen PDF
Spaargaren OC and Batjes NH 1995. Report on the classification into FAO-Unesco soil units of profiles selected from the NRCS pedon database for IGBP-DIS (Prepared for the Global Soil Data Task Group of the International Geosphere and Biosphere Programme (IGBP-DIS)) . Work. Pap. 95/01, ISRIC, Wageningen PDF
1994
Batjes NH 1994. The automated land evaluation system applied to SOTER, with an example from West Kenya. Work. Pap. 94/10, ISRIC, Wageningen PDF
Batjes NH 1994. Generation of spatial products using the WISE database. Work. Pap. 94/09, ISRIC, Wageningen PDF
Tempel P 1994. Data Transfer between Disparate Soil Databases. Work. Pap. 94/08, ISRIC, Wagenignen PDF
Vogel AW 1994. Compatibility of Soil Analytical Data: Determination of cation exchange capacity, organic carbon, soil reaction, bulk density, and volume percent of water at selected PF values by different methods. Work. Pap. 94/07, ISRIC, Wageningen PDF
Van Engelen VWP1994. Notes for refresher course LASOTER-GIS (INTA-CIRN, Castelar, Argentina). Work. Pap. 94/06, ISRIC, Wageningen PDF
Tempel P 1994. Global and National Soils and Terrain Digital Databases (SOTER) Database Structure. Work. Pap. 94/05, ISRIC, Wageningen PDF
Tempel P 1994. Global and National Soils and Terrain Digital Databases (SOTER) - Attibute database user manual. Work. Pap. 94/04, ISRIC, Wageningen PDF
Van Engelen VWP and Peters WL 1994. Manual del Curso de Entrenamiento Lasoter SIG (25-29 April 1994, Instituto Nacional de Investigaciones Agropecuarias Centro de Investigaciones de Recursos Naturales Castelar, Argentina). Papel de Trabajo y Edición Preliminar 94/03, ISRIC, Wageningen PDF
Batjes NH 1994. Report of a joint ISRIC-IRRI questionnaire on factors controlling production and emission of methane in irrigated rice lands. Work. Pap. 94/02, ISRIC, Wageningen PDF
Batjes NH, Bridges EM and Nachtergaele FO 1994. World Inventory of Soil Emission Potentials: Development of a Global Soil Database of Process-Controlling Factors. Work. Pap. 94/01, ISRIC, Wageningen PDF
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1993
Oldeman LR 1993. An international methodology for an assessment of soil degradation and georeferenced soils and terrain database. Work. Pap. 93/06, ISRIC, Wageningen PDF
Bomer WCWA, Bos AB and Kauffman JH 1993. Content and presentation of a soil exposition. Work. Pap. 93/05, ISRIC, Wageningen PDF
Batjes NH 1993. World Inventory of Soil Emission Potentials: Profile database user's manual (Version 1.0). Work. Pap. 93/04, ISRIC, Wageningen PDF
Brunt J 1993. Translims; Transfer Lims Data to Other Formats (Ver. 1.0). Work. Pap. 93/03, ISRIC, Wageningen PDF
Batjes NH 1993. World Inventory of Soil Emission Potentials: Guidelines for soil profile selection and protocol for completing the WISE data entry sheets. Work. Pap. 93/02, ISRIC, Wageningen PDF
Batjes NH, Van Engelen VWP and Oldeman LR 1993. Proposed assessment of the vulnerability of soils to pollution in Europe using a SOTER-shell approach. Work. Pap. 93/01, ISRIC, Wageningen PDF
1992
Van Lynden GWJ 1992. Handbook of soil conservation in Europe (Introduction, Chapter I & II - prepared for Council of Europe). Work. Pap. 92/10, ISRIC, Wageningen
Oldeman LR 1992. The role of ISRIC in the collection and dissemination of baseline information on soils. Work. Pap. 92/09, ISRIC, Wageningen PDF
Brunt J and Kauffman JH 1992. Soil Data Graph - Soil and climate data diagrams and tabular soil/land parameter assessment. Work. Pap. 92/08, ISRIC, Wageningen
Mooney HA and Sombroek WG 1992. Terrestrial Systems (From: International Conference on an Agenda of Science for Environment and Development into the 21st Centry (ASCEND 21) ICSU, Cambridge University Press, 1992, pp. 173-186) . Work. Pap. 92/07, ISRIC, Wageningen PDF
Oldeman LR and van Engelen VWP 1992. A world soils and terrain digital database (SOTER) - An improved assessment of land resources for sustainable management (ISSS/SSSA Conference on Operational Methods to Characterize Soil Behaviour in Space and Time, Ithaca NY, 27-30 July 1992). Work. Pap. 92/06, ISRIC, Wageningen PDF
Brunt J and van Reeuwijk LP 1992. SOILIMS - User Manual Laboratory Information System (draft). Work. Pap. 92/05, ISRIC, Wageningen
Batjes NH and Bridges EM 1992. World Inventory of Soil Emissions. Identification and Geographic Quantification of Soil Factors and Soil Processes that Control Fluxes of CO2, CH4 and N2O, and the Heat and Moisture Balance (Draft background paper for discussion). Work Pap. 92/04, ISRIC, Wageningen PDF
Van Engelen VWP 1992. Manual del curso de entrenamiento LASOTER SIG. Work. Pap. 92/03, ISRIC, Wageningen PDF
Van Engelen VWP and Pulles JHM (Eds) 1992. Manual SOTER - Procediminetos para la recoplicacion de mapas digitales de escale pequena y base de datos de caracteristicas de suelso y terreno (4te Ed.). Work. Pap. 92/02, ISRIC, Wageningen PDF
Aleva GJJ 1992. CORLAT handbook. Work. Pap. 92/01 (2nd draft, rev. ed. WP91/06), ISRIC, Wageningen PDF
1991
Pulles JHM, Kauffman JH and Wolf J 1991. A user-friendly menu and batch facility for the crop simulation model WOFOST v4.3. Work. Pap. 91/09, ISRIC, Wageningen PDF
Rademacher FEP 1991. Using the SOTER database for soil erosion assessment, with an example for a pilot area in South America. Work. Pap. 91/08, ISRIC, Wageningen PDF
Oldeman LR and van Velthuyzen HT 1991. Aspects and criteria of the Agro-Ecological Zoning Approach of FAO. Work. Pap. 91/07, ISRIC, Wageningen PDF
Aleva GJJ 1991. The CORLAT Handbook (Draft version 1.1). Work. Pap. 91/06, ISRIC, Wageningen PDF
Sombroek WG 1991. Amazon Landforms and Soils in Relation to Biological Diversity. Work. Pap. 91/05, ISRIC, Wageningen PDF
ISRIC 1991. Report 91/04 - no longer available
Van Engelen VWP and Pulles JHM 1991. The SOTER Manual, procedures for small scale digital map and database compilation of soil and terrain conditions. Work. Pap. 91/03, ISRIC, Wageningen PDF
Bridges EM 1991. The origins and international implications of soil horizon nomenclature (Paper presented at the Int. Meeting on Soil Horizons, Rennes, 4-6 September 1989). Work. Pap. 91/02, ISRIC, Wageningen PDF
Glazovskaya MA 1991. Methodological Guidelines for Forecasting the Geochemical Susceptibility of Soils to Technogenic Pollution (Draft). Work. Pap 91/01, ISRIC, Wageningen PDF
1990
Brunt J 1990. Use of Computers in a Laboratory Environment - An Introduction to MS-DOS and LOTUS 1.2.3. Work. Pap. 90/12, ISRIC, Wageningen PDF
Van Reeuwijk LP 1990. An Introduction to X-Ray Diffraction Analysis and X-Ray Fluorescence Spectorcopy. Work. Pap. 90/11, ISRIC, Wageningen PDF
Brunt J 1990. The Laboratory Methods and Data Exchange Programme (Interim Report on the Exchange Round 1990). Work. Pap. 90/10, ISRIC, Wageningen PDF
Batjes NH 1990. Macro-Scale Land Evaluation using the 1: 1 000 000 World Soils and Terrain Digital Database - A Possible Approach (For discussion). Work. Pap. 90/09, ISRIC, Wageningen PDF
Sombroek WG 1990. Amazon Landforms and Soils in Relation to Species Diversity. Work. Pap. 90/08, ISRIC, Wageningen PDF
Oldeman LR, Hakkeling RTA and Sombroek WG 1990. World Map of the Status of Human-Induced Soil Degradation. An Explanatory Note (Global Assessment of Soil Degradation GLASOD). Work. Pap. 90/07, ISRIC, Wageningen PDF
Bleijert R 1990. Introduction to Photographic Registration of the Microscopic Image. Work. Pap.90/06, ISRIC, Wageningen PDF
Batjes NH (Ed.) 1990. Proceedings of the international workshop on procedures manual revisions for the global soils and terrain digital database (SOTER) (Int. workshop, Wageningen, 24-26 April 1990). Work. Pap. 90/05, ISRIC, Wageningen PDF
Sombroek WG 1990. Suelos en Una Tierra Mas Caliente: Cambios en America Latina. Work. Pap. 90/04, ISRIC, Wageningen PDF
Sombroek WG 1990. Soils on a Warmer Earth: The Tropical Regions (Int. Workshop on Effects of Climatic Change on Soil Processe, UNEP-Nairobi, 12-14 Ferbruary 1990). Work. Pap. 90/03, ISRIC, Wageningen PDF
Van Engelen VWP and others 1990. SOTER Procedures Manual for Small-scale Map and Database Compilation ( Draft 3rd Revised version, March 1990). Work. Pap. 90/02, ISRIC, Wageningen PDF
Brunt J 1990. The Laboratory Methods and Data Exchange, Programme (Interim Report on the Exchange Round 1989). Work. Pap. 90/01, ISRIC, Wageningen PDF
1989
Groenendijk H 1989. Estimation of the Waterholding-Capacity of Soils in Europe: The Compilation of a Soil Dataset. Work. Pap. 89/06, ISRIC, Wageningen PDF
Van Engelen VWP 1989. Selection procedure of Geographic Information System software for SOTER. Work. Pap. 89/05, ISRIC, Wageningen PDF
Bouwman AF 1989. The Role of Soils and Land Use in the Greenhouse Effect: Background Paper International Conference "Soils and the Greenhouse Effect". Work. Pap. 89/04, ISRIC, Wageningen PDF
Shields JA and Coote DR 1989. SOTER, Procedures Manual for Small-Scale Map and Database Compilation and Procedures for Interpretation of Soil Degradation Status and Risk. (Rev. version of Work. Pap. 88/02). Work. Pap. 89/03, ISRIC, Wageningen PDF
Bridges EM and Creutzberg D 1989. Micromorphological Features of some Yermosols Developed on Fluviatile Clastic Deposits Southwest of the Oman Mountains. Work. Pap. 89/02, ISRIC, Wageningen PDF
Bouwman AF 1989. Land Evaluation for Rainfed Farming: Using Global Terrain Information on a 1º Longitude x Latitude Grid. Work. Pap. 89/01, ISRIC, Wageningen PDF
1988
Pulles JHM 1988. A model for a soils and terrain digital database. Work. Pap. 88/08, ISRIC, Wageningen PDF
Baumgardner MF and Van de Weg RF 1988. Space and Time Dimensions of a Worlds Soils and Terrain Digital Database (Presented at Symposium on Land Qualities in Space and Time, Wageningen, August 1988). Work. Pap. 88/07, ISRIC, Wageningen PDF
Creutzberg D and de Bakker H 1988. Soil Management of Spodosols with Plaggen Epipedon (Presented at Fifth International Soil Correlation Meeting (ISCOM), Lake Placid USA, October 1988). Work. Pap. 88/06, ISRIC, Wageningen PDF
Creutzberg D, Kauffman JH and Bridges EM 1988. Micromorphology of "Cangahua", a Cemented Subsurface Horizon in Soils from Ecuador (Presented at International Working Meeting on Soil Micromorphology, San Antonio, July 1988). Work. Pap. 88/05, ISRIC, Wageningen PDF
Oldeman LR (Ed.) 1988. Guidelines for General Assessment of the Status of Human-Induced Soil Degradation. Global Assessment of Soil Degradation (GLASOD). Work. Pap. 88/04, ISRIC, Wageningen PDF
Oldeman LR (Ed.) 1988. Directives pour une evaluation generale de l'état de la degradation des soil par l'homme. Document de Travail 88/04F, ISRIC, Wageningen PDF
Bouwman AF 1988. International Conference on: "Soils and the Geenhouse Effect" (Draft Background Paper). Work. Pap. 88/03, ISRIC, Wageningen PDF
Shields JA and Coote DR 1988. SOTER Procedures Manual for small Scale Map and Data Base Compilation (For Discussion). Work. Pap. 88/02, ISRIC, Wageningen PDF
FAO and ISRIC 1988. Revised Legend of the FAO-UNESCO Soil Map of the World. (Provisional editon of the final text). Work. Pap. 88/01, ISRIC, Wageningen PDF
1987
Sombroek WG 1987.World Soils Policy and People's Life (Presented at 1987 Aomori International Symposium Aomori, Japan August 1987). Work. Pap. 87/06, ISRIC, Wageningen PDF
Sombroek WG 1987. Variations in Contents and Forms of Sesquioxides in Lateritic Soils (Presented at the "Eurolat" Meeting, Freising-Weihenstephan, Rep. of Germany, March 1987). Work. Pap. 87/05, ISRIC, Wageningen PDF
Bridges EM 1987. A Select Bibliography of References on Soil Horizon Designation. Work. Pap. 87/04, ISRIC, Wageningen PDF
Bridges EM 1987. Soil Horizon Designations (Draft for Discussion). Work. Pap. 87/03, ISRIC, Wageningen. PDF
Sombroek WG 1987. Aridisols of the World, Occurrence and Potential (Presented at tte Fourth International Soil Correlation Meeting (ISCOM), October 1987, Lubbock, TX USA). Work. Pap. 87/02, ISRIC, Wageningen PDF
Creutzberg D 1987. Description of Units of the FAO-UNESCO Soil Map of the World Legend - As Used for Educational Purposes at ISRIC. Work. Pap. 87/01, ISRIC, Wageningen PDF
1986
Reeuwijk LP van and Oostrum AJM van 1986. A Rapid Method to Determine a Cec Delta Value of Soils (Poster Paper International Conference of Volcanic Soils, Tenerife, 1984). Work. Pap. 86/06, ISRIC, Wageningen PDF
Klamt E and Sombroek WG 1986. Contribution of Organic Matter to Exchange Properties of Oxisols. Work. Pap. 86/05, ISRIC, Wageningen PDF
Pleijsier LK 1986. The Laboratory Methods and Data Exchange Programme (Interim Report on the Exchange Round 86/1). Work. Pap. 86/04, ISRIC, Wageningen PDF
Vogel AW 1986. Class Limits for Land and Soil Properties: A Comparative Literature Study for Use at the Establishment of a World Soil and Terrain Digital Database (SOTER). Work. Pap. 86/03, ISRIC, Wageningen PDF
Oldeman LR 1986. Characterization of Main Experimental Sites, and Sub-sites and Questions of Instrumentation (Inter-Center Workshop on Agro-ecological Characterization Classification and Mapping, Rome 14-18 April, 1986). Work. Pap. 86/02, ISRIC, Wageningen PDF
Pleijsier L 1986. The Laboratory Methods and Data Exchange Programme (Interim Report on the Exchange Round 85-2). Work. Pap. 86/01, ISRIC, Wageningen PDF
1985
Pleijsier LK 1985. The Laboratory Methods and Data Exchange Programme Interim Report on the Echange Round 85-1. Work. Pap. 85/04, ISRIC, Wageningen PDF
Sombroek WG 1985. Identification and Management of Problem Soils of the Tropics and Subtropics (ICSU-CASAFA Meeting Wageningen, September 1985). Work. Pap. 85/03, ISRIC, Wageningen PDF
Kauffman JH 1985. Report on the Classification Exercise of some Deep Well Frained Red Clay Soils of Mozambique (First Draft). Work. Pap. 85/02, ISRIC, Wageningen PDF
Sombroek WG 1985. Towards an International Reference Base for Soil Classification ( Presented in Spanish at the: "1er Seminario Cientifico de Pedologia para la Region de Centro America y el Caribe", Havana, Cuba, April 1985). Work. Pap. 85/01, ISRIC, Wageningen PDF
1984
Sombroek WEG 1984. Soils of the Humid Tropics: State of Knowledge and Research Priorities (Presented at the 1e Simposio do Tropico Umido, Belém Para, Brazil, November 1984). Work. Pap. 84/06, ISRIC, Wageningen PDF
Van Barneveld GW and Sombroek WG 1984. Recent Advances in Soil Classification (Presented at the Fifth ASEAN Soil Conference, Bangkok Thailand, June 10-23, 1984). Work. Pap. 84/05, ISRIC, Wageningen PDF
Sombroek WG 1984. Towards a Global Soil Resources Inventory at scale 1: 1 000 000 (Discussion Paper - First Draft, October 1984). Work. Pap. 84/04, ISRIC, Wageningen PDF
Sombroek WG and van Reuler H 1984. The International Soil Reference and Information Centre (ISRIC) ( Presented by H. van Reuler at the Fifth ASEAN Soil Conference Bangkok, Thailand 10-23 June 1984). Work. Pap. 84/03, ISRIC, Wageningen PDF
van Diepen CA 1985. Wetland Soils of the World, their Characterization and Distribution in the FAO/UNESCO Approach (Presented at the VII International Soil Classification Workshop, Los Banos, Philippines, March 26 to April 6, 1984). Work. Pap. 84/02, ISRIC, Wageningen PDF
Sombroek WG 1984. Identification and use of subtypes of the argillic horizon (Presented at the International Symposium or Red Soils, Nanjing, China; 15-19 November 1989). Work. Pap. 84/01, ISRIC, Wageningen PDF
1983
Anon. 1983. ISM-UNESCO-MAB Workshop on Soil Research in Biosphere Reserves and other MAB Sites (Discussion Papers Presented at the Workshop 15-18 June 1983 at Wageningen). Work. Pap. 83/02, ISRIC, Wageningen PDF
Sombroek WG 1983. The International Soil Museum (ISM): Past, Present and Future (Presented at the IBSRAM-ACIAR Soil Workshop, Townsville, Australia; 12-16 September 1983). Work. Pap. 83/01, ISRIC, Wageningen PDF
1982
Van Baren H, Sombroek WG and Kaplan A 1982. Vertisols in the Collection on the International Soil Museum and Some Suggestions on Classification (Presented by W.G. Sombroek at the Fifth International Soil Classification Workshop, Khartoum, Sudan November 1982). Work. Pap. 82/02, ISRIC, Wageningen PDF
Sombroek WG 1981. A Quest for an Alternative to the Use of Soil Moisture Regimes at High Categoric Level in Soil Taxonomy (Presented at the Fifth International Soil Classification Workshop Khartoum, Sudan, November 1982). Work. Pap. 82/01, ISRIC, Wageningen PDF
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