Agricultural policy, sustainable crop production and poverty allevi ation in Africa : fifth biennial conference of the African Crop Scie nce society held in Lagos 21-26th, 2001 - [s.l.] : [s.n.] , [n.d.] - 141 p. ; 30 cm. ISBN: 9780061630 Subjects--Topical Terms: Crop production -- Congresses. Agriculture -- Congresses. Poverty alleviation -- Congresses. Poverty -- Congresses Dewey Class. No.: 630