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  1. Two pelobatid frogs from the Tertiary of North America and their relationships to fossil and Recent forms. American Museum novitates ; no. 1762
    By: Alexander, Annie Montague, 1867-1950. - Clark, John, 1909-1967. - Kellogg, Louise Phelps, d. 1942. - Zweifel, Richard George, 1926-
    Publication info: 1956
    Holding Institution: American Museum of Natural History Library
    View Book (External)