| 000 | 00380nam a2200145Ia 4500 | ||
|---|---|---|---|
| 008 | 130223s9999 xx 000 0 und d | ||
| 100 | _aJohnson, M.W., Williams, R.L. | ||
| 245 | _aPennsylvania corn performance studies 1979 | ||
| 260 | _aPennsylvania | ||
| 260 | _c1980 | ||
| 300 | _a44 p. | ||
| 440 | _aNo. 373; Pennsylvania Agricult | ||
| 901 | _pS32559 | ||
| 942 |
_cB _2udc |
||
| 999 |
_c129285 _d129285 |
||