000 | 00299 am a2200121 a 4500 | ||
---|---|---|---|
100 | 1 | _aBullock, D.S. | |
245 | 1 | _aPurebred bulls pay | |
260 |
_aWisconsin _c1920 |
||
300 | _a1-16 p. | ||
942 |
_2udc _cB |
||
440 | _aWisconsin Agricultural Extension Service. Circular No. 121 | ||
901 | _aS50714 | ||
999 |
_c107969 _d107969 |