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A field guide to the Cidaroid echinoids of the northwestern Atlantic Ocean, Gulf of Mexico, and the Caribbean Sea

By Phelan, Thomas Francis, 1921-. Washington, Smithsonian Institution Press; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.] 1970

By Phelan, Thomas Francis, 1921-. Washington, Smithsonian Institution Press; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.] 1970