| 000 | 00450nam a2200157Ia 4500 | ||
|---|---|---|---|
| 008 | 130223s9999 xx 000 0 und d | ||
| 080 | _a633:631.8.003.1 | ||
| 100 | _aJauregui, Mario A., Sain, Gustav E. | ||
| 245 | _aContinuous economic analysis of crop response to fertilizer in on-farm research | ||
| 260 | _aMexico | ||
| 260 | _c1992 | ||
| 300 | _a130 p. | ||
| 440 | _aNo. 3; Mexico : CIMMYT Economi | ||
| 901 | _pS42003 | ||
| 942 |
_cB _2udc |
||
| 999 |
_c118727 _d118727 |
||