| Author: | Olson, Robert K., David Backes, and Becky Rom |
| Title: | Voice for the Wilderness, A; Northland College Salutes Sigurd F. Olson |
| Series: | |
| Publisher: | Sigurd Olson Environmental Institute, Northland College |
| City: | Ashland |
| Date: | 2006 |
| Original Date: | |
| Libraries: | LOW |
| URL: | |
| Comments: | [Undated, 2006 estimated]
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