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Josef Frolík (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Josef Frolík" in English language version.

refsWebsite
Global rank English rank
1books.google.com
3rd place
3rd place

books.google.com

  • Richard C. S. Trahair; Robert L. Miller, eds. (2012). Encyclopedia of Cold War Espionage, Spies, and Secret Operations. New York: Enigma Books. p. 104. ISBN 978-1-929631-75-9.