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133 pp. Bookmarks supplied by UO. Maps, figure. Published November, 1982. Scanned by UO April, 2009.
108 pp. Bookmarks supplied by UO. Maps, tables, figures. Published December, 1978. Scanned by UO from item HE372 .E8 1978a, May, 2009.
162 pp. Bookmarks supplied by UO. Maps, charts, tables, illus. Update adopted January 1987; most recently published April 1, 2000. Scanned by UO from item HT168 .E9E93 2000, April, 2009.
80 pp. Bookmarks supplied by UO. Maps, tables. Published April, 1976. Scanned by UO April, 2009.
111 pp. Bookmarks supplied by UO. Maps, charts, tables. Published September, 1975. Scanned by UO April, 2009.
135 pp. Bookmarks supplied by UO. Maps, charts, tables, appendices. Published November, 1977. Scanned by UO from item HE372 .E8 1977, April, 2009.
129 pp. OCR and bookmarks supplied by UO. Maps, tables, figures. Published September, 1987. Captured November 24, 2008.
67 pp. Tables, Appendices. Referenced maps not included. Published February, 2004. Captured February 4, 2009.