194 resultados para Abandoned mines
em University of Michigan
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Mode of access: Internet.
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Chiefly tables.
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"June, 1980."
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Includes bibliographical references.
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"July, 1980."
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Funded by the U.S. Dept. of Interior, Office of Surface Mining Reclamation and Enforcement.
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Council chairman: Lt. Gov. Dave O'Neal.
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Title varies slightly.
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Mode of access: Internet.
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Mode of access: Internet.
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Bibliography: p. 58-59.
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Work performed at the Battelle Memorial Institute, Columbus, Ohio.
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Mode of access: Internet.
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Includes bibliographical references.
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Mode of access: Internet.