1. American upper cretaceous echinoidea Author/Creator: Cooke, C. Wythe 1887-1971. (Charles Wythe) Publication/Creation: Washington : U.S. Govt. Print. Off, 1953 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 254. Access & Availability: Loading
2. American upper cretaceous echinoidea Author/Creator: Cooke, C. Wythe 1887-1971, (Charles Wythe), author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1953 Resource Type: Book Access & Availability: Loading