| 000 | 00409nam a2200145Ia 4500 | ||
|---|---|---|---|
| 008 | 130223s9999 xx 000 0 und d | ||
| 100 | _aWillett, G.S., Penland, R.N. | ||
| 245 | _aEconomics of owning, leasing penting or custom-hiring selected farm machines in | ||
| 260 | _aTucson | ||
| 260 | _c1975 | ||
| 300 | _a45 p. | ||
| 440 | _aNo. 224; Arizona Agricultural | ||
| 901 | _pS26306 | ||
| 942 |
_cB _2udc |
||
| 999 |
_c120699 _d120699 |
||