Eurasian wigeon (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Eurasian wigeon" in English language version.

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archive.org

Linnaeus 1758 Linnaeus, C. (1758). Systema naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Tomus I. Editio decima, reformata. Vol. 1. Holmiae [Stockholm]: (Laurentii Salvii). p. 126. A. cauda acutiufcula subtus nigra, carite brunneo, fronte alba.(in Latin)
Mayr, E.; Cottrell, G.W., eds. (1979). Check-list of Birds of the World, Volume. Vol. 1 (1 2nd ed.). Cambridge, Massachusetts: Museum of Comparative Zoology. p. 462.