| 000 | 00408nam a2200145Ia 4500 | ||
|---|---|---|---|
| 008 | 130223s9999 xx 000 0 und d | ||
| 100 | _aOhannesian, J., Elterich, G.J. | ||
| 245 | _aEconomic analysis of alternative tillage systems for Delaware grain farms | ||
| 260 | _aDelaware | ||
| 260 | _c1979 | ||
| 300 | _a58 p. | ||
| 440 | _aNo. 429; Delaware Agricultural | ||
| 901 | _pS31850 | ||
| 942 |
_cB _2udc |
||
| 999 |
_c120415 _d120415 |
||