Mt. St. Helens Geologic Trail Guide

Department of Earth Sciences
Montana State University
P.O. Box 173480
Bozeman, MT 59717-3480
[email protected]

Tel: (406) 994-3331
Fax: (406) 994-6923
Mineral and Fossil Identification

Department Head:
Dr. David Varricchio
[email protected] 

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