Geologic map and cross sections of the central and southern Highland Mountains, southwestern Montana / U.S. Department of the Interior, U.S. Geological Survey ; by J.M. O'Neill [and others].
Series Titles:
Miscellaneous investigations series ; map I-2525 Miscellaneous investigations series (Geological Survey (U.S.)) ; map I-2525.
Variant Titles:
Highland Mountains, southwestern Montana, geologic map and cross sections