TY - GEN AU - Manyong, V.M. et al TI - The contribution of IITA-improved cassava to food security in sub-Saharan Africa : an impact study SN - 9781311878 PY - 2000/// CY - Ibadan PB - International Institute of Tropical Agriculture (IITA) KW - Cassava KW - Africa, Sub-Saharan KW - Food supply ER -