Download Vertical Sound Records A Description Of Recent Fundamental Advances In Mechanical Sound Records In Wax With Particular Reference To Vertical Cut And Bell Telephone System Monograph online

Vertical sound records: A description of recent fundamental advances in mechanical sound records in wax with particular reference to vertical cut and ... / Bell Telephone System. Monograph)

H. A Frederick

Format: Unknown Binding

Language: English

Pages: 12

Publisher: Bell Telephone Laboratories?] (1932)


Format: PDF / Kindle / ePub

Size: 9.2 MB

Downloadable formats: PDF

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