000 00278nam a2200121Ia 4500
008 161118s2016 xx 000 0 und d
082 _a630.717 W4E9
100 _aWilson, M.C.
245 0 _aExtension Teaching Methods
260 _aUSDA
_c1954
300 _a80 p.
942 _2ddc
999 _c21579
_d21579