00697cam a22002057a 4500003000500000005001700005008004100022010001000063011001000073035001000083040000900093100002800102245013300130260009800263300001000361490002700371650003300398650003300431830002700464CHAP20220329134259.0971013s1978            r     00010     d  a18046  a19018  a23103  cCHAP00aDelgado, Christopher L.13aAn invertigation of the lack of mixed farming in the west african savannh, a farming systems approach for Tenkodogo, Upper Volta  aAn Arbor, Mich. :bUniversity of Michigan. Center for Research on Economic Development,c1978  a71 p. 0aDiscussion paperv; 7414aAgriculturaxAfricazAfrica.14aPolítica ganaderaxAfrica.0 aDiscussion paperv; 74