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Transmission of speech.
Prepared for use in transmission courses for engineers.

APA Citation

American Telephone and Telegraph Company. (1929). Transmission of speech: Prepared for use in transmission courses for engineers. [New York]: American Telephone and Telegraph Company.

MLA Citation

American Telephone and Telegraph Company. Transmission of Speech: Prepared for Use In Transmission Courses for Engineers. [New York]: American Telephone and Telegraph Company, 1929.

Warning: These citations may not always be complete (especially for serials).