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132 pp. Bookmarks supplied by UO. Includes maps. Adopted August 20, 1997. Captured May 8, 2008.
47 pp. OCR and bookmarks supplied by UO. Maps, figures. Published October, 1999. Captured November 25, 2008.
173 pp. Bookmarks supplied by UO. Includes maps and figures. Adopted March 24, 1988. Captured October 10, 2007.
231 pp. Bookmarks supplied by UO. Includes maps. Published June, 1996. Captured December 21, 2007.
171 pp. Bookmarks supplied by UO. Includes maps and figures. Adopted September 21, 1994. Captured December 21, 2007.
92 pp. Bookmarks supplied by UO. Includes maps and figures. Adopted October 11, 2001. Captured December 21, 2007.
163 pp. Bookmarks supplied by UO. Includes maps. Adopted November, 1993; republished June, 2000. Captured December 21, 2007.
58 pp. Maps, chart, figures, illus. Not dated; most recent activity 2007. Captured March 10, 2009.
68 pp. Maps, tables, charts, figures, illus. Published November, 2007. Captured December 12, 2008.
174 pp. Bookmarks supplied by UO. Maps, charts, tables, figures, illus. Published October, 2004. Captured December 15, 2008.