American Telephone and Telegraph Company. (1923). The application of electricity and magnetism to transmission in the telephone plant. American Telephone and Telegraph Company.

American Telephone and Telegraph Company. The Application of Electricity and Magnetism to Transmission in the Telephone Plant. Dallas: American Telephone and Telegraph Company, 1923.

American Telephone and Telegraph Company. The Application of Electricity and Magnetism to Transmission in the Telephone Plant. American Telephone and Telegraph Company, 1923.