Species Limits in Antbirds (Aves: Passeriformes: Thamnophilidae): An Evaluation of Frederickena Unduligera (Undulated Antshrike) Based on Vocalizations
Zootaxa - New Zealand
doi 10.11646/zootaxa.2305.1.5
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Date
December 7, 2009
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Magnolia Press