000 00280nam a2200121Ia 4500
008 170101s1953 xx 000 0 und d
082 _a621.313 2 M76D
100 _aMORECOCK, E.M
245 0 _aDirect-current ciruits
250 _a2nd ed
260 _bN.Y
_c1953
942 _2ddc
_cB
999 _c13492
_d13492