000 00312 am a2200121 a 4500
100 1 _aGrisdale, J.H.
245 1 _aCrop production
260 _aCanada
_c1916
300 _a1-4 p.
942 _2udc
_cB
440 _aCrop, Production Canada Department of Agriculture. Exhibition Circular No. 64
901 _aS46714
999 _c102392
_d102392