1. Fossils in Ordovician tuffs, northeastern Maine Author/Creator: Neuman, Robert B., 1920- author Publication/Creation: Washington, D.C. : United States Department of the Interior, Geological Survey, 1964 Resource Type: Book Access & Availability: Loading
2. Fossils in Ordovician tuffs, northeastern Maine Author/Creator: Neuman, Robert B., 1920- Publication/Creation: Washington : U.S. Govt. Print. Off, 1964 Resource Type: Book Is Part Of: U.S. Geological Survey bulletin, no. 1181 A-J. Access & Availability: Loading