1 "Fișier:EB1911_-_Fig_5_Phonograph.png".

Fișier:EB1911 - Fig 5 Phonograph.png

DescriptionEB1911 - Fig 5 Phonograph.png English: EB1911 - Fig 5 Phonograph Date 1911 Source https://en.wikisource.org/wiki/Page:EB1911_-_Volume_21.djvu/492...