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Soil Quality and Agricultural Sustainability -R. LalSoil-Land Degradation: Interventions for Sustaining Civilization-F.P. MillerAssessment of Soil Quality-M.J. Mausbach and C. A. SeyboldMinimum Data Sets Needed for Soil and Climatic Characterization-J.M. KimbleStrategies for Fertilizer Research in the Tropics -B.H. Byrnes and D.T. HellumsSustainable Management of Land and Water Resources in Irrigated Semiarid and Tropical Regions -J.W. Kijne and M. KuperAddressing Key Natural Resource Management Challenges in the Humid Tropics Through Agroforestry Research-D.P. GarrityThe Biological Management of Tropical Soil Fertility: Some Research and Development Priorities for Africa -P.L. Woomer, J. Kotto-Same, M.A. Bekunda, and J.R. OkaleboThe Role of Soil Management in Improving Yields in the Rice-Wheat Systems of South Asia -K.F. Bronson and P.R. HobbsSustainable Management of Soil and Water Resources in the Upper and Trans-Gangetic Plains of India-B.S. Ghuman and R.S. NarangSoil Fertility Management for Sustained Production in the West Asia-North Africa Region: Need For Long-Term Research-J. Ryan and Mohamed Abdel MonemSoil-Conservation and Sustainability of Agricultural Systems in Sub-Saharan Africa-B. Kayombo and G.C. MremaConsequences of Soil Erosion on Soil Productivity and Its Restoration by Soil Management in Tanzania-J.B. Aune, I.K. Kullaya, M. Kilasara, F.S.B. Kaihura, B.R. Singh, and R. LalThe Role of Ruminant Livestock in Soil Fertility Management in Sub-Saharan Africa-J.W. Smith and A. NaazieMaintenance of Soil Organic Matter and Nitrogen Supply in the Moist Savanna Zone of West Africa-R.J. Carsky, S.S. Jagtap, G. Tian, N. Sanginga, and B. VanlauweGrow the Soils to Grow the Crops in Africa-G.D. AndersonNo Till and Mulching Effects on Soil Physical Quality of a Tropical Alfisol in Western Nigeria-R. LalResearch Strategies for Sustainable Agriculture in Acid Savanna of Latin America-R.R. VeraLong-Term Research on Natural Resource Management: A "Commodity Center" Perspective-J.W. White, O. Erenstein, L. Harrington, and K. SayreAgricultural Intensification Systems and Their Impact on Soil and Water Quality in the Cerrados of Brazil-D.V.S. ResckProduction Systems in the Savannas of Brazil: Key Factors To Sustainability-C.R. SpeharPhysical and Economic Model Integration for the Measurement of Environmental Impacts of Farming-C.C. Crissman and J.M. AntleA Decade of Progress at IBSRAM and Future Priorities-E.T. CraswellThe Pilot Linkage Program: An Experiment to Enhance Interinstitutional Collaborations-C.R. CurtisResearch Priorities for Sustainable Use of Soil and Water Resources-G.UeharaNeed for Action and Researchable Priorities-R. Lal