Empidonax Hammondii in Pennsylvania

Authors

Donald S. Heintzelman

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Recommended Citation

Heintzelman, Donald S. (1968) "Empidonax Hammondii in Pennsylvania," The Auk: Vol. 85: Iss. 3, Article 33.
Available at: https://digitalcommons.usf.edu/auk/vol85/iss3/33