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By: Berta, Annalisa - Smithsonian Institution. PressEdition:Publication info: Washington, D.C, Smithsonian Institution Press, 1991Volume: no.69 (1991)Series:Holding Institution: Smithsonian Libraries and ArchivesSubjects: Enaliarctos Miocene Oligocene Oregon PaleontologyBHL Collections: Unearthed! Smithsonian Libraries' Paleo Collection