000 00260nam a2200109Ia 4500
008 160710s1954 xx 000 0 und d
100 _aSKORTZKI,B.G.A.
245 _aELECTRIC SYSTEMS OPREATION
260 _bMCGRAW HILL
_c1954
300 _a370
942 _2ddc
_cB
999 _c22082
_d22082