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ill., maps; "June 1995;" Includes bibliographical references and index; NPS D-35; FES 95-27; Also available via Internet as PDF file through Southern Oregon Digital Archives: http://soda.sou.edu. Search...
ill., maps; Includes bibliographical references (p. 183-185)
maps (some col.); Cover title: Crater Lake National Park, Oregon; "NPS 2180"--P. 71; Includes bibliographical references (p. 70)