000 00311nam a2200121Ia 4500
008 160710s1947 xx 000 0 und d
082 _a625.1 R 41 S
100 _aRENCH,W. F.
245 _aSIMPLIFIED CURVE AND SWITCH WORK
260 _bSIMMONS BOARDMAN PUBLISHING CO.
_c1947
300 _a212
942 _2ddc
_cB
999 _c15743
_d15743