Estación de la emergencia (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Estación de la emergencia" in Spanish language version.

refsWebsite

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1books.google.com

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books.google.com

Clagett, Marshall (1995), Ancient Egyptian Science: A Source Book, Vol. II: Calendars, Clocks, and Astronomy, Memoirs of the APS, No. 214, Philadelphia: American Philosophical Society, p. 5, ISBN 9780871692146 ..