000 00305nam a2200121Ia 4500
008 220201s1956 xx 000 0 eng d
082 _a621.3178
100 _aMasn, C Russell
245 4 _aThe astand scicence of protective relaying
260 _bNewyork:John wiley
_c1956
300 _a410
942 _2ddc
999 _c76384
_d76384