000 00297 am a2200121 a 4500
245 1 _aCorn breeding yields results
260 _aUSA
_c1925
300 _a1-12 p.
100 1 _a
_d
942 _2udc
_cB
440 _aCorn Purdue Agricultural Experimental Station. Circular No. 128
901 _aS47678
999 _c103640
_d103640