Annotated list of the types of invertebrate Cretaceous fossils in the collection of the Academy of Natural Sciences, Philadelphia.
APA Citation
Johnson, C. Willison. Annotated list of the types of invertebrate Cretaceous fossils in the collection of the Academy of Natural Sciences, Philadelphia. .
MLA Citation
Johnson, Charles Willison, 1863-1932. Annotated List of the Types of Invertebrate Cretaceous Fossils In the Collection of the Academy of Natural Sciences, Philadelphia. ,
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