| 000 | 00505nam a2200157Ia 4500 | ||
|---|---|---|---|
| 008 | 140712s9999 xx 000 0 und d | ||
| 020 | _a813805236 | ||
| 041 | _aENG | ||
| 080 |
_a631.45:631.9:33 _bHEA-E |
||
| 245 | _aEconomic models of agricultural land conservation and environmental improvement | ||
| 260 |
_c1992 _aAmes, Iowa _bLowa State University Press |
||
| 300 | _axii, 275 | ||
| 650 | _aSoil FertilitySoil ImprovementSoil Sciences | ||
| 700 | _aHeady, Earl O. Vocke Gary F. | ||
| 942 |
_2UDC _cBK |
||
| 999 |
_c6239 _d6239 |
||