000 00479 a2200253 4500
001 1006235
020 _a2
041 _aeng
080 _a621.313.13 Sis
245 _aElectricity direct and alternating current.
250 _a
260 _a
260 _bMcGraw-Hill, Book Co., New York,
260 _c1955
300 _ap.xii,538.
300 _c
490 _a
100 _aSiskind, C.S.\
700 _a
650 _a
650 _a
942 _cBK
942 _2UDC
999 _c76601
_d76601