The telephone, the microphone & the phonograph
by Du Moncel, Th., comte · en · published 2025-03-22
A free public domain ebook from Project Gutenberg. Telephone; Microphone; Phonograph
About this book
The telephone, the microphone & the phonograph is one of 76,000+ free public-domain ebooks indexed in the SENTINEL Books catalog, sourced from Project Gutenberg. Published 2025-03-22, written in en, classified under TK in the Library of Congress system.
Subjects: Telephone; Microphone; Phonograph
Bookshelves: Category: History - Modern (1750+); Category: Science - Physics; Category: Engineering & Technology