Mengesha, M H and Rao, K E P (1990) World Sorghum Germplasm Collection And Conservation. In: proceedings of a workshop on evaluating sorghum for tolerance to al-toxic tropical soils in Latin Americaproceedings of a workshop on evaluating sorghum for tolerance to al-toxic tropical soils in Latin America, 28 May - 2 June, Cali, Colombia.