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 .

Bibliografiset tiedot
Yhteisötekijä: American Telephone and Telegraph Company. Long Lines Dept
Aineistotyyppi: Kirja
Kieli:English
Julkaistu: [New York] s.n. c1939.
Aiheet:
Telephone.
Telegraph.
Electricity.