000 00325nam a2200121Ia 4500
001 MPKV051595
008 120911s9999 xx 000 0 und d
082 _a630.715
245 _aJournal of Extension Vol 9
_c;
246 _aJournal of Extension Vol 9
260 _aWisconsin
_bMadison
_c1971
650 _aAgricultural Extention
999 _c49600
_d49600