00377    a2200133   4500020001500000082001500015100002200030245008100052260004400133300002100177650001400198650001600212650001500228  a0333253922  a338.1bJOH  aJohnson, David T.  aThe business of farming ba guide to farm business management in the tropics  aLondonbThe Macmillan Pressc1982g1982  aviii,362p.c25cm  aEconomics  aAgriculture  aProduction