00354nam a2200133Ia 4500020001500000082002000015100001400035245007900049260002500128300001500153490004200168500000500210700000500215  a0882440721  a338.1bSj625.EA  aSjo, John  aEconomics for agriculturists; a beginning text in agricultural economicsb  aColumbusbGRIDc1976  axii, 232p.  aGRID series in Agricultural Economics  a  a