000 00348nam a2200133Ia 4500
008 190711s9999 xx 000 0 und d
082 _a621.3178 W295
100 _aWARRINTON,A.R.V.C
245 0 _aPROTECTIVE RELAYS:THEORY THEIR THEORY AND PRACTICE
250 _a2
260 _aLONDON
_bChapman & Hall
_c1969
300 _a25X16
942 _cBK
_2DDC
999 _c14547
_d14547