Крячок білий (Ukrainian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Крячок білий" in Ukrainian language version.

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dx.doi.org

Niethammer, K. R., and L. B. Patrick-Castilaw. 1998. White Tern (Gygis alba). in The Birds of North America, No. 371 (A. Poole and F. Gill, eds.). The Birds of North America, Inc., Philadelphia, PA. DOI:10.2173/bna.371