000 003550000a22001690004500
060 _a100
082 _a633 RAT
100 _aHarrison, Carter M
100 _aRather, Howard C
245 _aField crops
250 _a2
260 _aUSA, Mc Graw- Hill Book Company Inc
260 _c1951
300 _a446
650 _aField crops
942 _cBK
999 _c221152
_d221152