Bantilan, M C S and Rao, P P and Padmaja, R (2001) Future of agriculture in the semi-arid tropics: proceedings of an International Symposium on Future of Agriculture in Semi-Arid Tropics, International Crops Research Institute for the Semi-Arid Tropics, Patancheru, India, 14 Nov 2000. Monograph. International Crops Research Institute for the Semi-Arid Tropics.