Guidebook of the Helena Area, west-central Montana. Compiled by Richard B. Berg and Ray H. Breuninger
Contributors: Berg, R.B.; Tobacco Root Geological Society
Publisher: Montana Bureau of Mines and Geology
Place of publication: Butte
Language: eng
Number of pages: 64
Subjects: Geology - Guidebooks - Montana
Notes: Prepared in cooperation with the Tobacco Root Geological Society Twelfth Annual Field Conference July 15-18, 1987

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