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1by Sinclair, William C. (William Campbell), 1928-“...U.S. Geological Survey,...”
Published 1978
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2by Sinclair, William C. (William Campbell), 1928-“...U.S. Geological Survey,...”
Published 1977
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3by Sinclair, William C. (William Campbell), 1928-“...U.S. Geological Survey,...”
Published 1982
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4by Sinclair, William C. (William Campbell), 1928-“...U.S. Geological Survey,...”
Published 1985
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Government Document eBook