| 000 | 00463nam a2200169Ia 4500 | ||
|---|---|---|---|
| 008 | 130223s9999 xx 000 0 und d | ||
| 080 | _a631.8:633 | ||
| 100 | _aJauregui, Mario A., Gustavo E. Sain | ||
| 245 | _aContinous economic analysis of crop response to fertilizer in on-farm research | ||
| 260 | _aMexico | ||
| 260 | _bCIMMYT | ||
| 260 | _c1992 | ||
| 300 | _a103 p. | ||
| 440 | _aNo.3; IFPRI Economics Paper | ||
| 901 | _pS42915 | ||
| 942 |
_cB _2udc |
||
| 999 |
_c118721 _d118721 |
||