00489nam a2200157Ia 45000030006000000080041000060400015000471000019000622450058000812600009001395460012001489420012001609990017001720050017001899520125002060STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aEarl Heady, O.  aEconomics of agricultural production and resource use  c1964  aEnglish  2ddccBK  c10929d1092920220125165555.0  00102ddc4070aSTCALbSTCALcGENd2015-05-30g15.00l1o338.1-33p130r2020-06-04 00:00:00s2020-03-10w2015-05-30yBK