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GEOLOGY AND MINERAL RESOURCES OF THE ANIAKCHAK DISTRICT
Knappen, R. S., 1929, Geology and mineral resources of the Aniakchak district: U.S. Geological Survey Bulletin 0797, p. 161-223, 1 sheet, scale 1:250,000. full-text PDF : 925 KB plate 6 PDF : 6.5 MB