| 000 | 00420cam a22001337a 4500 | ||
|---|---|---|---|
| 008 | 180718b1986 xxu||||| |||| 00| 0 eng d | ||
| 082 | _aZ084 H544 | ||
| 245 |
_aPerspectives on farming systems research and extension _cedited by Peter E. Heildebrand |
||
| 260 |
_aBoulder _bLynne Rienner _c1986 |
||
| 300 | _a167p. | ||
| 650 | _aAgricultural extension | ||
| 650 | _aAgricultural research | ||
| 700 | _aHeildebrand, Peter E. | ||
| 999 |
_c346184 _d346184 |
||