000 00306 am a2200121 a 4500
100 1 _aGrisdale, J.H.
245 1 _aCrop production
260 _aWashington
_c1970
300 _a1-55 p.
942 _2udc
_cB
440 _aCrop, Production United Statea Department of Agriculture. No. 1970
901 _aS55035
999 _c113259
_d113259