| 000 | 00396nam a2200145Ia 4500 | ||
|---|---|---|---|
| 008 | 130223s9999 xx 000 0 und d | ||
| 100 | _aNenson, G.A. | ||
| 245 | _aFactors affecting changes in milk production on selected Pennsylvania farms | ||
| 260 | _aPennsylvania | ||
| 260 | _c1974 | ||
| 300 | _a35 p. | ||
| 440 | _aNo. 796; Pennsylvania Agricult | ||
| 901 | _pS23402 | ||
| 942 |
_cB _2udc |
||
| 999 |
_c122028 _d122028 |
||