Ширококлюв Грауера (Russian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Ширококлюв Грауера" in Russian language version.

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Thomas M. Brooks, John D. Pilgrim, Ana S. L. Rodrigues & Gustavo A. B. Da Fonseca. Conservation status and geographic distribution of avian evolutionary history // Phylogeny and Conservation (англ.) / Andy Purvis; John L. Gittleman; Thomas Brooks. — Cambridge University Press, 2005. — Vol. 8. — P. 267—294. — (Conservation Biology). — ISBN 978-0-521-82502-3.

Pseudocalyptomena graueri (англ.). The IUCN Red List of Threatened Species. Дата обращения: 26 ноября 2013.