Guidelines for carrier phone systems : installation, maintenance, and improvement /

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Bibliographic Details
Author / Creator:Cawley, James C.
Imprint:Avondale, Md. : U.S. Dept. of the Interior, 1981.
Description:iii, 69 p. : ill. ; 18 cm.
Series:A Bureau of Mines handbook
Subject:Mine communication systems
Electric lines -- Carrier transmission
Electric lines -- Carrier transmission.
Mine communication systems.
Format: E-Resource U.S. Federal Government Document Print Book
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Notes:Bibliography: p. 67. classification:I 28.16/2:

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