Спенсер, Перси Лебарон (Russian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Спенсер, Перси Лебарон" in Russian language version.

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ica.org

ica2012.ica.org

  • Percy Spencer // SNAC (англ.) — 2010.

inventionatplay.org

loc.gov

id.loc.gov

patents.google.com

web.archive.org