Crater Lake, blue through time

[written by Gary Larson, Mark Buktenica, and Robert Collier]., Title from title screen (viewed August 11, 2003)., "March 2003.", "U.S. Geological Survey and the National Park Service Partnership in Monitoring.", This archived document is maintained by the State Library of Oregon. It is for informational purposes and may not be suitable for legal purposes., Mode of access: Internet from the State Library of Oregon U.S. Government Publications Collection., Text in English.
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This archived document is maintained by the State Library of Oregon as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.
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Crater Lake (Or.)
Date Issued: [2003]