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81
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82by Hobba, W. A. (William A.)“...U.S. Geological Survey,...”
Published 1980
Government Document Book -
83
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84Published 1980“...U.S. Geological Survey,...”
Government Document Book -
85
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86
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87
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88
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89
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90by Harvey, Edward Joseph, 1916-“...U.S. Geological Survey,...”
Published 1981
Government Document Book -
91
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92Published 1980“...[U.S. Geological Survey],...”
Government Document Book -
93
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94
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95
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96
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97
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98
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99Published 1976“...U.S. Geological Survey,...”
Government Document Conference Proceeding Book -
100