000 00309 am a2200121 a 4500
100 1 _aGussow, H.T.
245 1 _aControl of potato diseases
260 _aOttawa
_c1915
300 _a1-6 p.
942 _2udc
_cB
440 _aPotato, Diseases Canada Department of Agriculture. Circular No. 9
901 _aS46449
999 _c102036
_d102036