- Back
-
Title: Triple-cone linen-diaphragm loud-speaker, 1929 [Go to resource]
Description: Triple-cone linen-diaphragm loud-speaker, 1929 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 1973-431 Go to resource More Like this...
[Edit] - Back