| 000 | 00395nam a2200145Ia 4500 | ||
|---|---|---|---|
| 008 | 130223s9999 xx 000 0 und d | ||
| 100 | _aBeer, C.E., Wiersma, D. | ||
| 245 | _aIrrigated corn yield in the North Central Region of the United States | ||
| 260 | _aAmes | ||
| 260 | _c1970 | ||
| 300 | _a1-42 p. | ||
| 440 | _aIowa Agricultural and Home Eco | ||
| 901 | _pS18349 | ||
| 942 |
_cB _2udc |
||
| 999 |
_c126049 _d126049 |
||