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By: Academy of Natural Sciences of Philadelphia. Department of Mollusks - Academy of Natural Sciences of Philadelphia. Department of Mollusks - Delaware Museum of Natural History.Edition:Publication info: Greenville, Del., etc, Delaware Museum of Natural History, etc,Volume: v.1=no.1-4 (1959-1961)Series:Holding Institution: Smithsonian Libraries and ArchivesSubjects:BHL Collections: