National Acoustic Laboratories Library
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ITU-T. P. 38. Telephone transmission quality subscribers' lines and sets. Transmission characteristics of operator telephone systems (OTS)

By: Material type: TextTextPublication details: Geneva ITU 1993
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Item type Current library Call number Status Date due Barcode
Bound printed item Bound printed item National Acoustic Laboratories ITU-T. p. 38 Available 311120

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