000 | 00252nam a2200061Ia 4500 | ||
---|---|---|---|
100 | _aUnited States, Department of Agriculture | ||
245 | _aTrade offs Between farm income and Selected Environmental Indicators : A Case study of soil Constraints. Technical Bulletin No.1550. | ||
082 | _aUNI | ||
999 |
_c332521 _d332521 |