scholarly article by Norman O. Frederiksen et al published 1986 in Geology
scientific article published in 1989
scientific article published in 2007
scientific article published in 2001
scholarly article by Norman O. Frederiksen published in January 1995
scientific article published in 1994
scientific article published in 1997
scientific article published in 1934
scholarly article by Norman O. Frederiksen published 1991 in U.S. Geological Survey Bulletin
USGS Open-File Report 01-87-B
article by Gregory S. Gohn et al published 2001 in Open-File Report
scientific article published in 1980
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