000 00300nam a2200121Ia 4500
008 160710s1933 xx 000 0 und d
082 _a621.31921 WAG
100 _aWAGNER,C.F.
245 _aSYMMETRICAL COMPONENTS
260 _bMcGRAW-HILL BOOK COMPANY,INC.
_c1933
300 _a436
942 _2ddc
_cB
999 _c22086
_d22086