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ill., maps; Report title; Includes appendices: Crater Lake Liminological Studies 1986 and 1987.; "Robert E. Benton, Superintendent Crater Lake National Park." - T.p.; Title pages of the two Crater Lake Limnological Studies include the following: CA 9000-3-0003 Subagreement 12.; Includes bibliographical references p. 80-81 and p. 174.

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