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| 001 | MPKV057485 | ||
| 008 | 120911s9999 xx 000 0 und d | ||
| 082 | _a630.715 | ||
| 245 |
_aJournal of Extension Vol.13 No.1-6 _c; |
||
| 246 | _aJournal of Extension Vol.13 No.1-6 | ||
| 260 |
_aWisconsin _b605 extention buliding Madison _c1975 |
||
| 650 | _aAgricultural extention | ||
| 999 |
_c55478 _d55478 |
||