Year
1980
1980
Citation
Johnson, N. K. 1980. Character variation and evolution of sibling species in the EMPIDONAX DIFFICILIS-FLAVESCENS complex (Aves: Tyrannidae). Univ. California Pub. Zool. 112:x + 151 pp.
Keywords
Reference Code
B80JOH01NAUS
B80JOH01NAUS
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