Guidelines for carrier phone systems : installation, maintenance, and improvement /
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| Author / Creator: | Cawley, James C. |
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| Imprint: | Avondale, Md. : U.S. Dept. of the Interior, 1981. |
| Description: | iii, 69 p. : ill. ; 18 cm. |
| Language: | English |
| Series: | A Bureau of Mines handbook |
| Subject: | Mine communication systems Electric lines -- Carrier transmission Electric lines -- Carrier transmission. Mine communication systems. |
| Format: | U.S. Federal Government Document Print Book |
| URL for this record: | http://pi.lib.uchicago.edu/1001/cat/bib/4121461 |
| Physical Description: | iii, 69 p. : ill. ; 18 cm. |
|---|---|
| Bibliography: | Bibliography: p. 67. |
