000 002990000a22001210004500
245 _aProtective relays, their theory and practice
100 _aWarrington, A.R. Van C.
250 _a3d ed.
260 _aLondon
_bChapman & Hall
_c1977
080 _a621.316.925
_bW3
041 _aEN
942 _cBK
999 _c112519
_d112519