America Had No Radio Crystals in 1941 — So Engineers Cut 30 Million From Brazilian Quartz
https://www.youtube.com/watch?v=a1_l8Qdsq5A
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Use tags for the type of equipment your topic is about. Include the "repairs" tag, too, when appropriate. If a new tag is needed, request one in the TEAdministration forum.
Use tags for the type of equipment your topic is about. Include the "repairs" tag, too, when appropriate. If a new tag is needed, request one in the TEAdministration forum.