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By: Lea, Isaac, - American Philosophical Society.Edition:Publication info: Philadelphia, Printed for the author, 1852Volume:Series:Holding Institution: Harvard University, Museum of Comparative Zoology, Ernst Mayr LibrarySubjects: Dinosaurs Footprints, Fossil Paleontology Pennsylvania PottsvilleBHL Collections:
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By: Lea, Isaac, - American Philosophical Society.Edition:Publication info: Philadelphia, Printed for the author, 1852Volume:Series:Holding Institution: Smithsonian Libraries and ArchivesSubjects: Footprints, Fossil Paleontology Pennsylvania PottsvilleBHL Collections: Unearthed! Smithsonian Libraries' Paleo Collection