000 002810000a22001090004500
245 _aNational seminar on electrical insulation
110 _aInstitute of Engineers India, Calcutta IN
260 _aCalcutta
_bIEI
_c1974
080 _a621.315.6
_bI6
041 _aEN
942 _cBK
999 _c109310
_d109310