000			003820000a22001330004500
245			_aProtective relays : their theory and practice
100			_aWarrington, A.R. van C.
260			_aLondon _bChapman & Hall
300			_a2 v.
500			_a1968-69 : 013688 - v.1; 013689 - v.2; 020498 - v.1 (484 p.; 380 p.); diags.
080			_a621.316.925 _bW3
041			_aEN
942			_cBK
999			_c94550 _d94550