Development of the Phonograph at Alexander Graham Bell's Volta Laboratory

Contributions from the Museum of History and Technology, United States National Museum Bulletin 218, Paper 5, (pages 69-79)

author	Newville, Leslie J.
download	pg30112.pdb (153K)
language	English
categories	Phonograph Q: Science (General)
copyright status	Public domain in the USA.
source	Project Gutenberg EBook #30112 2009-09-27