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ill., maps; Shipping list no.: 90-263-P; "May 1990."; Includes bibliographical references
ill., maps; Includes bibliographical references (p. 183-185)
ill., maps; Includes bibliographical references
Report title; "Robert E. Benton, Superintendent." - T.p.
Report title; "Robert E. Benton, Superintendent." - T.p.;
1 map; Report title; Includes bibliographical references
Maps; Two folded maps laid in; Cover title: Crater Lake National Park, Oregon; Includes bibliographical references (p. 26-7)
ill, maps ; Report title; Bibliography: p. 68-73
Report title
ill., map; Printout; Thesis (M.S.)--Oregon State University, 2000; Includes bibliographical references (leaves 38-41)