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- Tropical zone
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- Soil management - CRSP : amendment no. 2, a project/program/activity design document from 1985 PD-AAS-077
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- TropSoils [sic], the first three years, an other usaid supported study/document from 1985 PN-AAV-845
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- TropSoils triennial technical report 1981-1984, an annual report from 1985 PN-AAW-903
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- Tropical zone
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- Soil management - CRSP : amendment no. 3, a project/program/activity design document from 1986 PD-AAX-732
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- Tropical zone
- Document
- Effect of land clearing methods and postclearing management on aggregate stability and organic carbon content of a soil in the humid tropics, a journal article from 1986 PN-ABJ-652
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- Tropical zone
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- Soil - plant relationships in the tropics, a journal article from 1986 PN-ABK-397
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- Tropical zone
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- TropSoils program in Indonesia : report of the external evaluation panel, a special evaluation from 1987 PD-ABE-334
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- Tropical zone
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- TropSoils : technical report 1985-1986, an other usaid supported study/document from 1987 PN-ABJ-588
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- Tropical zone
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- Screening of leguminous trees for alley cropping on acid soils of the humid tropics, a conference proceedings/paper from 1987 PN-ABP-509
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- Soil in the tropics : classification and characteristics, a conference proceedings/paper from 1987 PN-ABP-524
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- TropSoils : administrative report, 1981-1986, a final contractor/grantee report from 1988 PN-ABB-903
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- TropSoils : solving problems that have roots in the soil, an other usaid supported study/document from 1988 PN-ABD-309
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- Phosphate rock fertilization in tilled and no-till low-input systems in the humid tropics, a journal article from 1988 PN-ABN-909
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- Administrative management review of the soil management collaborative research support program, a special evaluation from 1988 XD-ABC-510-A
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- Report of the external evaluation panel : orientation and review of proposals, 1990, a special evaluation from 1990 PD-ABB-849
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- Low soil nitrogen mineralization rates in a humid tropical pasture, a journal article from 1990 PN-ABQ-813
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- CRSP - soil management, 10/17-21/89, an evaluation summary from 1991 PD-ABC-510
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- Soil management -- CRSP : amendment no. 6, a project/program/activity design document from 1991 PD-ABD-013
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- Soil management collaborative research support program, TROPSOILS : annual activities work plans and budgets, September 25, 1991-September 24, 1992, a design/implementation workplan from 1991 PD-ABD-597
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- Executive summary report : program year ten 1990-1991 -- TropSoils, the soil management collaborative research support program, an annual report from 1991 PD-ABD-891
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- Physical constraints to root growth in savanna oxisols, a journal article from 1991 PN-ABH-281
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- Executive summary report : program year nine, 1989-1990, an annual report from 1991 PN-ABH-498
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- TropSoils technical report, 1988-1989, an other usaid supported study/document from 1991 PN-ABK-055
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- Acid soil profiles of the semiarid and subhumid tropics in Central and West Africa, a conference proceedings/paper from 1991 PN-ABK-213
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- Agroforestry in acid soils of the humid tropics, a journal article from 1991 PN-ABK-216
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- Conservation tillage in the humid tropics of Peru, a conference proceedings/paper from 1991 PN-ABK-468
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- Efecto de los animales en pastoreo sobre las propiedades fisicas de suelos de la region tropical humeda de Peru, a journal article from 1991 PN-ABK-470
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- World Soil Resources, SCS-NHQ -- Soil Management Support Services (SMSS - OICD - AID) of TROPSOILS : quarterly report -- FY 1992, a periodical from 1992 PD-ABE-147
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- Prediction of long-term fertilizer nitrogen requirements of maize in the tropics using a nitrogen balance model, a journal article from 1992 PN-ABL-709
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- Management and dynamics of potassium in a humid tropical ultisol under a rice-cowpea rotation, a journal article from 1992 PN-ABL-850
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- Soil water efficiency of sorghum and cowpea as affected by nutrient input and tillage : a summary of work at the Cinzana Agronomic Research Station, Mali, an other usaid supported study/document from 1992 PN-ABM-074
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- Cation and nitrate leaching in an oxisol of the Brazilian Amazon, a journal article from 1993 PN-ABQ-816
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- Amelioration of subsoil acidity in an oxisol of the humid tropics, a journal article from 1993 PN-ABQ-817
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- Land clearing and reclamation of ultisols and oxisols, a journal article from 1994 PN-ABR-406
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- Methods and guidelines for assessing sustainable use of soil and water resources in the tropics, an other usaid supported study/document from 1994 PN-ABS-982
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- Socio-economic impact analysis of technologies generated by the soil management and other CRSPs in the humid tropics : project report, an other usaid supported study/document from 1994 PN-ABT-051
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- Place for alley cropping in sustainable agriculture in the humid tropics, a conference proceedings/paper from 1994 PN-ABX-668
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- Sustainable management of tropical steeplands : an assessment of terraces as a soil and water conservation technology, an assessment from 1998 PN-ACD-877
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- Manejo sustenible de tierras de laderas tropicales : un analisis de terrazas con una tecnologia para la conservacion de suelo y agua, an assessment from 1998 PN-ADA-456
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- Intensive soil management in the humid tropics, an other usaid supported study/document from 1999 PN-ADA-457
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- Long-term effects of soil conservation barriers on crop yield on a tropical steepland in Haiti, an other usaid supported study/document from 2003 PN-ADA-464
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- Short-term effects of crop rotation, residue management, and soil water on carbon mineralization in a tropical cropping system, a journal article from 2008 PN-ADP-823
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