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By "Tryon, George W. Jr., (George Washington), 1838-1888"
A monograph of the terrestrial Mollusca inhabiting the United States : with illustrations of all species / by George W. Tryon, Jr.
By: Tryon, George W.
Publication info: Philadelphia :The Author,
Contributed by: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
BHL Collections: Ernst Mayr Library of the MCZ, Harvard University