Geology of the Varney and Cameron quadrangles, Madison County, Montana / by Jarvis B. Hadley ; with a chapter on Paleontology and correlation of the Madison Group on Baldy Mountain by William J. Sando and J. Thomas Dutro, Jr.
Publication Info.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1980.
Washington : United States Government Printing Office