Institute on Lake Superior Geology, 35th Duluth, 1989. Proceedings and abstract.  Organized by Richard W. Ojakangas [and others]
Contributors: Ojakangas, R.W.
Language: eng
Subjects: Geology - Guidebooks - Minnesota; Geology - Guidebooks - Wisconsin
Notes: Contents:- Part 1.  Program and abstracts.- Part 2. Field trip guidebook

11