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By: Snyder, L. L. (Lester Lynne), - Royal Ontario Museum.Edition:Publication info: Toronto, Royal Ontario Museum, 1953Volume:Series:Holding Institution: University of Toronto - Royal Ontario Museum Library & ArchivesSubjects: 1953 Alder flycatcher canimp Empidonax OntarioBHL Collections:
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By: Lanyon, Wesley Edwin,Edition:Publication info: New York, N.Y, American Museum of Natural History, c1986Volume: no. 2846Series:Holding Institution: American Museum of Natural History LibrarySubjects: Classification Empidonax Flycatchers Phylogeny TyrannidaeBHL Collections:
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By: Macouzet, Tania - Escalante Pliego, Patricia.Type: ArticleIn: Revista mexicana de biodiversidadVolume:Series:Issue:Date: 2013-03-01Page Range:Publication Info:Subjects: Caribbean Catharus Empidonax migratory Vireo Zonotrichia