| 000 | 00414nam a2200133Ia 4500 | ||
|---|---|---|---|
| 001 | 30273 | ||
| 008 | 150525s9999 xx 000 0 und d | ||
| 020 | _a92-5-103448-6 | ||
| 100 | _aNorman, David | ||
| 245 | _aFarming systems development and soil conservation | ||
| 260 |
_aRome _bFood and agriculture organization of the united nations _c1994 |
||
| 300 | _a173p. | ||
| 650 |
_aAgricultural systems _bSoil conservation |
||
| 999 |
_c51764 _d51764 |
||