00271nam a2200109Ia 4500082002000000100003200020245004900052260003600101300001400137500000500151700000500156  a338.18bH258.FM  aHardaker, J. B. and others.  aFarm management and agricultural economicsb  aSydneybAngus & Robertsonc1970  avi, 201p.  a  a