000 002830000a22001210004500
245 _aPower system protection vol.2
100 _aElectricity Council ed
260 _aLondon
_bMacDonald
_c1969
300 _a469p. : ill.
080 _a621.316.9
_bP6
041 _aEN
942 _cBK
999 _c94547
_d94547