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ill., maps; Report title; Includes appendices: Crater Lake Liminological Studies 1984 and 1985; Includes bibliographical references; "Robert E. Benton, Superintendent Crater Lake National Park." - T.p.
ill.; Report title; Includes appendices: Crater Lake Liminological Studies 1984 and 1985; "Robert E. Benton, Superintendent CLRA." - T.p.; Includes bibliographical references.