1. Climatic implications of two pollen analyses from newly recognized rocks of latest Pliocene age in the Washburn Range, Yellowstone National Park, Wyoming Author/Creator: Richmond, Gerald Martin, 1914- author Publication/Creation: [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1978 Resource Type: Book Access & Availability: Loading
2. Climatic implications of two pollen analyses from newly recognized rocks of latest Pliocene age in the Washburn Range, Yellowstone National Park, Wyoming Author/Creator: Richmond, Gerald Martin, 1914- Publication/Creation: Washington : U.S. Govt. Print. Off., 1978 Resource Type: Book Is Part Of: U.S. Geological Survey bulletin, no. 1452-1456. Access & Availability: Loading