Unspecified / 1968
Catalog of the type specimens of invertebrate fossils [by] Louis R. Purnell
Catalog of the type specimens of invertebrate fossils [by] Louis R. Purnell
The Smithsonian catalogs Catalog of the type specimens of invertebrate fossils [by] Louis R. Purnell as catalogs and collections in its Fossils records.
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Part. 1. Paleozoic cephalopoda