00401nam a2200145Ia 4500008004100000082001600041100001700057245003600074260002300110300000800133650004100141650003400182653002700216653001200243170901s1957    xx            000 0 und d  a631.3bB32M  aBates, W. N. 0aMechanization of Tropical Crops  aLondonbELBSc1957  a410  aAgriculture and related technologies  aTechnology (Applied sciences)  aAgricultural machinery  aTropics