000 00298nam a2200121Ia 4500
008 160710s1947 xx 000 0 und d
082 _a547 W39
100 _aWELCHER,FRANK J.
245 _aORGANIC ANALYTICAL REAGENTS
260 _bD. VAN NOSTRAND COMPANY
_c1947
300 _a442
942 _2ddc
_cB
999 _c10564
_d10564