00450    a2200145   4500020001500000082001500015100002500030245003900055260002600094300001800120440005800138650004300196650004100239700002400280  a9251004005  a631.3bWIL  aWilkinson, Robert H.  aElements of agricultural machinery  aRomebFAOc1977g1977  ax,241p.c28cm  aFAO agricultural services bulletin 12 Supp. 1vVOl. 1  aTools, machinery, apparatus, equipment  aAgriculture and related technologies  aBraunbeck, Oscar A.