000 00336nam a2200133Ia 4500
008 130225s9999 xx 000 0 und d
100 _aZavitz, C.A.
245 _aForty years experiments with grain crops
260 _aOttawa
_c1927
300 _a1-98 p.
440 _aOntario Agricultural Experime
901 _a29586
942 _cB
_2udc
999 _c5797
_d5797