00290nam a22001217a 4500020001500000082002000015100001600035245003700051260003500088300000800123700002100131700001600152  a047108672X  a681.763bKRU/DE  aKrutz, Gary  aDesign of agricultural machinery  aU.S.AbJohn Wiley & Sonsc1984  a472  aThompson, Lester  aClaar, Paul