000
002830000a22001210004500
245
_a
Power system protection vol.2
100
_a
Electricity Council ed
260
_a
London
_b
MacDonald
_c
1969
300
_a
469p. : ill.
080
_a
621.316.9
_b
P6
041
_a
EN
942
_c
BK
999
_c
94547
_d
94547