64 resultados para abandoned coal mine drainage
em University of Michigan
Resumo:
"June, 1980."
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"Prepared for the Secretary of Commerce."
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Mode of access: Internet.
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USBM Working Fund Agreement HO133005.
Resumo:
Mode of access: Internet.
Resumo:
"May 1996."
Resumo:
Includes subject index.
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Description based on volume 18.
Resumo:
"June 1996."
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Mode of access: Internet.
Resumo:
"B-229231"--P. [1].
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Mode of access: Internet.
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Includes bibliographical references.
Resumo:
"Project no. 60.040."
Resumo:
"Coal Industry Advisory Committee to the Ohio River Valley Water Sanitation Commission. Research project no. 370-8."