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82 pp. Bookmarks supplied by UO. Maps, tables, appendices. Published May, 1978. Scanned by UO from item HT168 .A58 M53 1978, May 2009
62 pp. Bookmarks supplied by UO. Includes maps. Published June 30, 1978. Received from ODOT January 2, 2007.
79 pp. Bookmarks modified by UO. Tables, illus. Published June, 2008. Captured May 22, 2009.
84 pp. Bookmarks modified by UO. Includes maps and figures. Published July, 1978; latest revision June, 2003. Received from ODOT January 2, 2007.
84 pp. Bookmarks supplied by UO. Includes maps. Adopted May 1978; latest revision June 2003. Received from ODOT January 2, 2007.