000 00323nam a2200121Ia 4500
008 220201s1955 xx 000 0 eng d
041 _aENG
100 _aMASON, C RUSSELL
245 0 _aART AND SCIENCE OF PROTECTIVE RELAYING
260 _aLONDON
_bTHAMES AND HUDSON PUBLISHING COMPANY
_c1955
300 _a410
942 _2ddc
999 _c47046
_d47046