00497     2200193   4500001002100000005001500021008004100036020001500077035001900092041000700111082001100118090001700129100002300146245002800169250001100197260004800208300003300256650001400289INLIS00000000000167820210430103941210430|||||||||   |   |||   |||| ||   |   a0813803772  0010-0421001678  aen0 a631.54  a631.54 MIT c0 aMITCHELL, Roger L.00aCrop growth and culture  aCet. 6  aIowabThe Iowa State University Pressc1979  aviii, 349 hlm.: ill.; 24 cm. 0aPERTANIAN