三極真空管 (Japanese Wikipedia)

Analysis of information sources in references of the Wikipedia article "三極真空管" in Japanese language version.

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americanradiohistory.com

books.google.com

doi.org

earlyradiohistory.us

electronicdesign.com

hts-homepage.de

ieee.org

kyoritsu-pub.co.jp

  • 野崎, 昭弘 (1972). 電子計算機基礎講座 10 スイッチング理論. 共立出版. pp. 1-2. ISBN 9784320020504. https://www.kyoritsu-pub.co.jp/book/b10004915.html 

patents.google.com

zenodo.org