The fossil flora of Florissant, Colorado. Bulletin of the AMNH ; v. 24, article 4
Cockerell, Theodore D. A. (Theodore Dru Alison), 1866-1948 Florissant Expeditions (1906-1908)
Book
1908
English
Wikidata: https://www.wikidata.org/entity/Q51479206
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