1. Quality of ground water in Monitor and Williams townships, Bay County, Michigan Author/Creator: Twenter, F. R., author Publication/Creation: Lansing, Michigan : U.S. Geological Survey, 1985 Format: Book Access & Availability: Loading
2. Ground-water contamination in East Bay Township, Michigan Author/Creator: Twenter, F. R., author Publication/Creation: Lansing, Michigan : U.S. Geological Survey, 1985 Format: Book Access & Availability: Loading
3. Geology and ground water in Verde Valley--the Mogollon Rim region, Arizona Author/Creator: Twenter, F. R., author Publication/Creation: [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1963 Format: Book Access & Availability: Loading