00502cam a2200157 a 4500020001700000040000800017082002600025100001800051245004800069260005400117300002900171490005800200650003200258650001600290650003800306  a0850031052 :  cDLC00a630 MAR 1991 C166 Or.1 aMoris, Jon R.10aExtension alternatives in tropical Africa /  aLondon :bOverseas Development Institute,cc1991.  a184 p. :bill. ;c21 cm.1 aOccasional paper / Agricultural Administration Unit ; 0aAgricultural extension work 0aAgriculture 0aAgricultural development projects