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| 041 | _aEN | ||
| 082 |
_a631 _bWOR _223 |
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| 100 | _aSri Lanka (Ahungalla: 1986) | ||
| 245 | _aProceedings of a workshop on farming systems research and extension in Sri Lanka | ||
| 260 |
_aAhungalla _bUSAID Diversified Agricultural Research Project _c1924 |
||
| 300 | _a224 pages | ||
| 509 | _aNS | ||
| 650 | _aFarming systems | ||
| 942 | _cR | ||