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Coal mine illumination :proceedings, Bureau of Mines Technology Transfer Seminars.

Mine illumination :proceedings

Published Year

• 1970-1979 (1)
• 1980-1989 (1)

Subject

• Mine lighting--Congresses (2) *
• Coal mines and mining--United States--Congresses (1)

Author

• Lewis, W. H. (1)
• Whitehead, K. L. (1)

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