00451nam a2200157Ia 4500008004100000020001500041082001600056100001900072245004100091250001200132260003700144300000800181650004100189650003400230653002900264170901s1997    xx            000 0 und d  a0470900768  a631.3bS48E  aSinghal, O. P. 0aElements of Agricultural Engineering  a1 and 2  aAllahabadbSaroj Prakashanc1997  a147  aAgriculture and related technologies  aTechnology (Applied sciences)  aAgricultural engineering