English
United States. National Park Service
Wikipedia page about this book: https://en.wikipedia.org/wiki/Agate_Fossil_Beds_National_Monument
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EPUB
Paleontology -- Miocene · Vertebrates, Fossil -- Nebraska -- Agate Fossil Beds National Monument · Paleontology -- Nebraska -- Agate Fossil Beds National Monument · Natural history -- Nebraska -- Agate Fossil Beds National Monument · Agate Fossil Beds National Monument (Neb.) · QE
Project Gutenberg #56303
Public domain in the USA.