How Electronic Tubes Work (c1944), by General Electric Company (PDF at americanradiohistory.com)
from New Online Books http://www.americanradiohistory.com/Archive-Bookshelf/Technology/GE-How-Electronic-Tubes-Worth-1944.pdf
How Electronic Tubes Work (c1944), by General Electric Company (PDF at americanradiohistory.com)
from New Online Books http://www.americanradiohistory.com/Archive-Bookshelf/Technology/GE-How-Electronic-Tubes-Worth-1944.pdf
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