| 000 | 00379nam a2200145Ia 4500 | ||
|---|---|---|---|
| 008 | 130223s9999 xx 000 0 und d | ||
| 100 | _aMichalson, E.L. | ||
| 245 | _aEconomic analysis of alternative egg production systems | ||
| 260 | _aPennsylvania | ||
| 260 | _c1966 | ||
| 300 | _a47 p. | ||
| 440 | _aNo. 733; Pennsylvania Agricult | ||
| 901 | _pS15032 | ||
| 942 |
_cB _2udc |
||
| 999 |
_c120414 _d120414 |
||