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81Published 1999“...Fact sheet (Geological Survey (U.S.)) ;...”
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82Published 1999“...Fact sheet (Geological Survey (U.S.)) ;...”
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83by East, Jeffery W.“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 1999
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84by Sherwood, Donald A.“...Fact sheet (Geological Survey (U.S.)) ;...”
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85by Williams, Richard S., Jr“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 1999
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86Published 1999“...Fact sheet (Geological Survey (U.S.)) ;...”
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87Published 1999“...Fact sheet (Geological Survey (U.S.)) ;...”
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88Published 1999“...Fact sheet (Geological Survey (U.S.)) ;...”
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89by Ockerman, Darwin J.“...Fact sheet (Geological Survey (U.S.)) ;...”
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90by Slade, R. M.“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 1999
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91by Walker, John F. (John Frederick)“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 2000
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92Published 1995“...Fact sheet (Geological Survey (U.S.)) ;...”
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93by Larsen, Matthew C.“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 2000
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94Published 2000“...Fact sheet (Geological Survey (U.S.)) ;...”
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95by Baedecker, Mary Jo“...Fact sheet (Geological Survey (U.S.)) ;...”
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96by Shanley, James B.“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 2000
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97Published 1999“...Fact sheet (Geological Survey (U.S.)) ;...”
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98by Ging, Patricia B.“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 1999
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99by Van Metre, Peter“...Fact sheet (Geological Survey (U.S.)) ;...”
Published 1999
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100Published 1999“...Fact sheet (Geological Survey (U.S.)) ;...”
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