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By: Livezey, Bradley C. - Humphrey, Philip Strong, - University of Kansas. Museum of Natural History.Edition:Publication info: Lawrence, Kan, Museum of Natural History, University of Kansas, 1992Volume: no.8 (1992)Series:Holding Institution: Harvard University, Museum of Comparative Zoology, Ernst Mayr LibrarySubjects: Anatidae Identification South America Steamer ducksBHL Collections: