| 000 | 00430pab a2200145 454500 | ||
|---|---|---|---|
| 008 | 180718b1990 xxu||||| |||| 00| 0 eng d | ||
| 100 | _aSouthgate, Douglas | ||
| 245 | _aThe causes of land degradation along "spotaneously" expanding agricultural frontiers in the Third World | ||
| 260 | _c1990 | ||
| 300 | _a93-101 | ||
| 362 | _aFeb. | ||
| 650 | _aDeforestation - Underdeveloped Areas | ||
| 773 | _aLand Economics | ||
| 909 | _a7150 | ||
| 999 |
_c7150 _d7150 |
||