Collier's New Encyclopedia (1921)/Microphone

From Wikisource
Jump to navigation Jump to search
←
Micro-organism
Collier's New Encyclopedia
Microphone
Microscope
→

Edition of 1921; disclaimer.

2547294Collier's New Encyclopedia — Microphone

​MICROPHONE. See Telephone.

Retrieved from "https://en.wikisource.org/w/index.php?title=Collier%27s_New_Encyclopedia_(1921)/Microphone&oldid=8243043"