Ошейниковый воробьиный сыч (Russian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Ошейниковый воробьиный сыч" in Russian language version.

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9^th place

archive.org

Grimmett, Richard; Inskipp, Carol; Inskipp, Tim. Birds of India: Pakistan, Nepal, Bangladesh, Bhutan, Sri Lanka, and the Maldives (Second ed.). — United States: Princeton University Press, 2012. — С. 218. — ISBN 978-0-691-15349-0.
König, Claus; Weick, Friedhelm; Becking, Jan-Hendrik. Owls: A Guide to the Owls of the World. — United States: Yale University Press, 1999. — ISBN 978-0-300-07920-3.
Mikkola, Heimo. Owls of the World: A Photographic Guide. — United States: Firefly Books, 2012. — С. 364. — ISBN 978-1-77085-136-8.