00418nam a2200121Ia 4500008004100000020001700041100001800058245008300076250001200159260005300171300003900224650003300263120527s9999    xx            000 0 und d  a033 3 499212  aJohnson D. T.  aThe business of farming./ba guide to farm business management in the tropics   a2nd, ed  bMacmillan.a Tottenham, court road, londonc1990  av.:, 377pbinclides, index and ill  aAgriculturevFarm management