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39 pp. OCR and bookmarks supplied by UO. Map. Adopted October 1, 1980. Captured December 1, 2008.
111 pp. OCR and bookmarks supplied by UO. Maps, charts, tables, illus. Most recent activity 1994, per Web site. Captured December 1, 2008.
20 pp. Maps, figures, tables. Published March 14, 2005. Captured December 2, 2008.
50 pp. Bookmarks supplied by UO. Maps, charts, tables. Published October, 2005. Captured December 2, 2008.
45 pp. Maps, tables, charts. Published August, 2000. Captured December 2, 2008.
77 pp. Bookmarks supplied by UO. Includes maps and figures. Adopted January 2, 1992. Captured October 9, 2007.
109 pp. Bookmarks supplied by UO. Includes maps and figures. Adopted July 24, 1991. Captured October 10, 2007.
18 pp. Maps, figures. Published October, 2003. Captured February 19, 2009.
153 pp. Bookmarks modified by UO. Maps, tables, figures. Adopted February 17, 2005; published April, 2005. Captured November 25, 2008.
82 pp. Bookmarks supplied by UO. Includes maps and figures. Adopted June 12, 1997. Captured December 27, 2007.