000 00302nam a2200121Ia 4500
008 170101s1959 xx 000 0 und d
082 _a630.717 BYR
100 _aByrn darcie
245 0 _aEvalution in Extension
260 _bDivision of Ext. Res. & Trap
_c1959
300 _a107 p.
942 _2ddc
_cB
999 _c354116
_d354116