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 |