citation
Babu, S; Anandajayasekeram, P; Rukuni, Mandivamba, 'Challenges facing African agriculture', In Impact of science on African agriculture and food security, ed. P. Anandajayasekeram, M. Rukani, S. Babu, F. Liebenberg, and C.L. Keswani, CABI, Cambridge, MA, 2007