00443nam a2200133Ia 4500008004100000082001500041100002100056245005900077260004400136300000800180942000700188952009700195999001700292140113s9999    xx            000 0 und d  a63:33   K4  a"Heady, Earl.O."  aEconomics of agricultural Production and resource use.  a1964bPrentice Hall of IndiacNew Delhi  a850  cBK  00104070aVTLbVTLd2014-01-13l0o63:33   K4pVBK633r2014-01-13 00:00:00w2014-01-13yBK  c57311d57311