000 00234nam a22001097a 4500
082 _a621.3 COT
100 _aCOTTON, H
_940193
245 _aELECTRICAL PRINCIPLES
260 _aLONDON
_bMACMILLAN
_c1965
300 _a419P
942 _cBK
999 _c579351
_d579351