| 000 | 00402nam a2200145Ia 4500 | ||
|---|---|---|---|
| 008 | 130223s9999 xx 000 0 und d | ||
| 100 | _aEgbert, Alvin C. | ||
| 245 | _aRegional changes in grain production: an application of spatial linear programmi | ||
| 260 | _aAmes | ||
| 260 | _c1964 | ||
| 300 | _a981-1016 p. | ||
| 440 | _aNo. 521; Iowa Agricultural and | ||
| 901 | _pS6748 | ||
| 942 |
_cB _2udc |
||
| 999 |
_c131528 _d131528 |
||