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Wani, S P and Rego, T J and Pathak, P, eds. (2002) Improving Management of Natural Resources for Sustainable Rainfed Agriculture. Proceedings of the Training Workshop on On-farm Participatory Research Methodology, 26–31 July 2001 . International Crops Research Institute for the Semi-Arid Tropics , Patancheru, Andhra Pradesh, India. ISBN 92-9066-449-5
Singh, P and Vijaya, D and Chinh, N T and Pongkanjana, A and Prasad, K S and Srinivas, K and Wani, S P (2001) Potential Productivity and Yield Gap of Selected Crops in the Rainfed Regions of India, Thailand, and Vietnam: Natural Resource Management Program Report no. 5. Monograph. International Crops Research Institute for the Semi-Arid Tropics , Patancheru, Andhra Pradesh, India.