Welch, S. (1979). Signalling in telecommunications networks. Peter Peregrinus, on behalf of the Institution of Electrical Engineers.
Chicago-čujuhus (17. p.)Welch, Samuel. Signalling in Telecommunications Networks. Stevenage: Peter Peregrinus, on behalf of the Institution of Electrical Engineers, 1979.
MLA-čujuhus (9. p.)Welch, Samuel. Signalling in Telecommunications Networks. Peter Peregrinus, on behalf of the Institution of Electrical Engineers, 1979.
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