000
00238 a2200073 4500
245
0
_a
Earthing of telecommunication installations /
_c
.
710
2
_a
International Telecommunication Union.
_e
Wydawca
_4
pbl
260
_a
Geneva :
_b
ITU,
_c
1976.
300
_a
IV,51 s.;
_c
34 cm.
999
_c
4742
_d
4742