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101
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102by Reed, Lloyd A.“...U.S. Geological Survey,...”
Published 1980
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103by Harvey, Edward Joseph, 1916-“...U.S. Geological Survey,...”
Published 1981
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104
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105
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106
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107by Kalkhoff, Stephen J.“...U.S. Geological Survey,...”
Published 1993
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108by Melvin, Robert L.“...U.S. Geological Survey,...”
Published 1995
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109
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110by Banta, Edward R.“...U.S. Geological Survey,...”
Published 1994
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111by Schreffler, Curtis L.“...U.S. Geological Survey,...”
Published 1996
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112by Robertson, Dale M.“...U.S. Geological Survey,...”
Published 1996
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113
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114
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115
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116by Steuer, Jeffrey J.“...U.S. Geological Survey,...”
Published 1997
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117by Walton-Day, Katherine“...U.S. Geological Survey,...”
Published 2000
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118by Lang, David J.“...U.S. Geological Survey,...”
Published 1982
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119by Kay, Robert T.“...U.S. Geological Survey,...”
Published 1997
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120by Melvin, Robert L.“...U.S. Geological Survey,...”
Published 1995
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Government Document eBook