000 003410000a22001570004500
060 _a100
082 _a633.1 WIL
100 _aWilson, Harold K
245 _aGrain crops
250 _a2
260 _aNew York, Mc Graw- Hill Book Company Inc
260 _c1955
300 _a396
650 _aGrain crops crop rotation
942 _cBK
999 _c220723
_d220723