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 .

Библиографические подробности
Соавтор: American Telephone and Telegraph Company. Long Lines Dept
Формат: ‌
Язык:English
Опубликовано: [New York] s.n. c1939.
Предметы:
Telephone.
Telegraph.
Electricity.