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Title: Quartz crystal, mounted, for control of amateur radio transm [Go to resource]
Description: Quartz crystal, mounted, for control of amateur radio transmitter (f: 7144 kc,42.02m) c. 1930 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 1972-410 Go to resource More Like this...
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