000 00273nam a2200109Ia 4500
008 140208s9999 xx 000 0 und d
044 _aU.S.A.
245 _aCrop Science v.1, 1961
_c
260 _bCrop Science Society of America
_a
_c1961
300 _a478p.
942 _2udc
_cP
999 _c10645
_d10645