00678     2200193   4500001002100000008004100021035002000062245011000082100003200192260004300224300005300267520007300320082001200393650002000405650001500425650002000440650001300460990001100473INLIS000000000006822                                   Ind    a0010-1118006822  aDiversity of fields farmers: explaining yield variations in North CamerooncPIETERS, Bart de Steenhuijsen  aBart de Steenhuisen Pieters  aWageningenbLandbouwuniversiteitc1995  aiv, 226 p.: ill.; 24 cmciv, 226 p.: ill.; 24 cm  aBibl. p.199-216 [Thesis (S3) Landbouwuniversiteit te Wageningen 1995  a631.151  aFARMING SYSTEMS  aPRODUCTION  aFARM MANAGEMENT  aCAMEROON  a251/96