000
002810000a22001090004500
245
_a
Telecommunication principles for final certificate vol.2 principles C
100
_a
Knight, S.A.
260
_a
London
_b
Butterworths
_c
1971
080
_a
621.39
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K6
041
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EN
942
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BK
999
_c
92761
_d
92761