00318cam a22001097a 4500008004000000082001100040100001900051245006000070260005200130300001000182650001600192180718b1980   xxu||||| |||| 00| 0 eng d  aZ An25  aAndreae, Bernd  aThe economics of tropical agriculturecby Bernd Andreae  aLondonbCommonwealth Agricultural Bureauxc1980  a178p.  aAgriculture