Principles of electricity applied to telephone and telegraph work a training course text prepared for employees of the Long Lines Department, American Telephone and Telegraph Company, November 1938 .

Principles of electricity applied to telephone and telegraph work a training course text prepared for employees of the Long Lines Department, American Telephone and Telegraph Company, November 1938 .

書誌詳細
団体著者: American Telephone and Telegraph Company. Long Lines Dept
フォーマット: 図書
言語:English
出版事項: [New York] s.n. c1939.
主題:
Telephone.
Telegraph.
Electricity.