Sustainable food production in sub-Saharan Africa 1 IITA's contributions ; 2 Constraints and opportunities / [Nathan Russell] ...[et al.]. - Ibadan, Nigeria : International Institute of Tropical Agriculture, c1992. - vii, 195 p. : ill. (some col.). ISBN: 9781310863 LCCN: 93016120 Subjects--Topical Terms: Sustainable agriculture--Africa, Sub-Saharan.Sustainable agriculture--Research.--Africa, Sub-Saharan