Huevo de Colón de Tesla (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Huevo de Colón de Tesla" in Spanish language version.

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archive.org

Inventions, Researches, and Writings of Nikola Tesla, Thomas Commerford Martin - Chapter XLII, pp 477, Mr. Tesla's Personal Exhibit at the World's Fair

tfcbooks.com

"Nikola Tesla's Egg of Columbus," incluyendo una fotografía del dispositivo en acción. 21st Century Books.