| 000 | 00358 am a2200121 a 4500 | ||
|---|---|---|---|
| 100 | 1 | _aLarson, C.W. | |
| 245 | 1 | _aProfitable and unprofitable cows co-operative cow-testing | |
| 260 |
_aPennsylvania _c1919 |
||
| 300 | _a1-15 p. | ||
| 942 |
_2udc _cB |
||
| 440 | _aCows Pennsylvania Agricultural Experiment Station. Extension Circular No. 43 | ||
| 901 | _aS47640 | ||
| 999 |
_c103572 _d103572 |
||