00644nam a2200181Ia 4500008004100000082001400041100002200055245010300077260004300180300000800223650004100231650003400272653001600306700002100322942001200343999001700355952009000372170901s1930    xx            000 0 und d  a633bH89C  aHughes, D. Harold 0aCrop Production Principles and PracticesbA Handbook of Information for the Student of Agriculture  aNew YorkbThe Macmillan Compannyc1930  a816  aAgriculture and related technologies  aTechnology (Applied sciences)  aField crops  aHenson, R. Edwin  2ddccBK  c14984d14984  00102ddc4070aRAUbRAUd2017-10-18l0o633 H89Cp35287r2017-10-18w2017-10-18yBK