| 000 | 00395nam a2200145Ia 4500 | ||
|---|---|---|---|
| 008 | 130223s9999 xx 000 0 und d | ||
| 100 | _aAuer, L., Heady, E.O. | ||
| 245 | _aEstimation and impution of crop yield advances by states and regions | ||
| 260 | _aAmes | ||
| 260 | _c1968 | ||
| 300 | _a213-251 p. | ||
| 440 | _aNo. 563; Iowa Agricultural and | ||
| 901 | _pS27298 | ||
| 942 |
_cB _2udc |
||
| 999 |
_c121628 _d121628 |
||