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240 pp. Bookmarks supplied by UO. Includes maps and figures. Published February, 1995. Captured December 21, 2007.
592 pp. Bookmarks supplied by UO. Maps, tables, figures, appendices. Published July, 2008; amended October, 2008. Captured February 13, 2009.
48 pp.Bookmarks supplied by UO. Maps, figures, tables, illus. Published September 18, 2006. Captured December 12, 2008.
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.