000 00462nam a2200133Ia 4500
008 130903s9999 xx 000 0 und d
082 _a63.002(66) 1967-1992 IITA N2
245 _aSustainable food production in sub-saharan Africa 1.; IITA' s contributions.
260 _aNigeria
_bIITA
_c1992
300 _a208p.
600 _aInternational Institute of Tropical Agriculture, 1992.
650 _aFood Production,Sustainable Agriculture-Africa
942 _cGRBK
999 _c83007
_d83007