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Journal Article

Review: Speciation in Empidonax Flycatchers: Character Variation and Evolution of Sibling Species in the Empidonax Difficilis- Flavescens Complex (Aves: Tyrrannidae) by N. K. Johnson

Reviewed Work: Character Variation and Evolution of Sibling Species in the Empidonax Difficilis- Flavescens Complex (Aves: Tyrrannidae) by N. K. Johnson
Review by: Robert C. Whitmore
Ecology
Vol. 62, No. 5 (Oct., 1981), pp. 1403-1404
Published by: Wiley on behalf of the Ecological Society of America
DOI: 10.2307/1937310
Stable URL: http://www.jstor.org/stable/1937310
Page Count: 2
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