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Scientific investigations map ; 2820. 2004
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Geological Survey (U.S.) 2001 1894
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Geological Survey (U.S.) 1998 1907
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Miscellaneous investigations series (Geological Survey (U.S.)) ; map I-2326. 1993
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Miscellaneous investigations series (Geological Survey (U.S.)) ; map I-1894. 1989
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Miscellaneous field studies ; map MF-1635-B. 1987
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