| 000 | 00442nam a2200133Ia 4500 | ||
|---|---|---|---|
| 008 | 220204s9999 xx 000 0 und d | ||
| 082 |
_a631.11:001.814 _bSHA |
||
| 100 | _aSHANER, W W | ||
| 245 | 0 | _aFarming systems research and development: Guidelines for developing countries. | |
| 260 |
_aColorado _bWestview _c1982 |
||
| 490 | _aWestview special studies in agriculture/aquaculture science policy | ||
| 650 | _aFarming systems | ||
| 942 | _cBK | ||
| 999 |
_c38853 _d38853 |
||