00419nam a2200145Ia 4500008004100000082001600041100001500057245003000072260004700102300000800149650004100157650003400198653002700232700001400259170901s1973    xx            000 0 und d  a631.3bH92F  aR. Donnell 0aFarm Machinery Mechanisms  aUSAbThe Lowa State University Pressc1973  a319  aAgriculture and related technologies  aTechnology (Applied sciences)  aAgricultural machinery  aW. Lester