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3
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Vacuum-tubes -- Design and construction. : How It's Made: Audio Tubes/Light Bars/Model Aircraft/Snare Drums - Series 16, Ep 7 Of 13
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2010
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1
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4
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Vacuum-tubes -- History. : 70 years of radio tubes and valves : a guide for electronic engineers, historians, and collectors / by John W. Stokes
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1982
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1
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