Geology of the Huron area, south-central Indiana - Gray, Henry Hamilton, 1922- (Bloomington : State of Indiana, Dept. of Conservation, Geological Survey, 1960)
With : Minerals of Indiana. Bloomington : State of Indiana, Dept. of Conservation, Geological Survey, 1960. Bound together subsequent to publication.
Bibliography: p.62-64.
Keywords: Geology -- Indiana -- Huron area