Isthmus of Perekop (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Isthmus of Perekop" in English language version.

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2books.google.com

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bbc.com

"Ukraine orders full military mobilisation over Russia moves". BBC News. Retrieved March 2, 2014.

books.google.com

Danylo Husar Struk (15 December 1993). Encyclopedia of Ukraine: Volume III: L-Pf. University of Toronto Press, Scholarly Publishing Division. p. 2488. ISBN 978-1-4426-5125-8.
J. Murray. Handbook for Travellers in Russia, Poland, and Finland. Рипол Классик. p. 277. ISBN 978-1-147-56625-3.