00386    a2200109   4500020001500000082001300015100002600028245008800054260007200142300002100214650004100235  a9781310960  a630bSUS  aRaj, D.R. Mohan eed.  aSustainable food production in sub-saharan Africab2 constraints and opportunities   aAfricabInternational Institute of Tropical Agriculturec1993g1993  a[vi],108p.c25cm  aAgriculture and related technologies