00461nam a2200157Ia 4500008004100000020001500041082001600056100001800072245005100090250000600141260004400147300000800191650004100199650003400240653002900274170901s1975    xx            000 0 und d  a0198594429  a631.3bH88F  aHudson, N. W. 0aField engineering for agricultural development  a5  aNew YorkbClarendon Press- Oxfordc1975  a225  aAgriculture and related technologies  aTechnology (Applied sciences)  aAgricultural engineering