Ridgway on the Species of the Genus Empidonax

Authors

J. A. Allen

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Recommended Citation

Allen, J. A. (1887) "Ridgway on the Species of the Genus Empidonax," The Auk: Vol. 4: Iss. 1, Article 21.
Available at: https://digitalcommons.usf.edu/auk/vol4/iss1/21