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Your search for [author]Stefanko, Robert returned 2 records.

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Coal mining technology : theory and practice.

by Stefanko, Robert; New York, N.Y.: Society of Mining Engineers of the American Institute of Mining, Metallurgical, and Petroleum Engineers, 1983.

Subject: Coal mines and mining.

Relevance: 20.86%

Coal mining technology : theory and practic.

by Stefanko, Robert; New York: Society of Mining Engineers of the American Institute of Mining, Metallurgical and Petroleum Engineers, 1983.

Subject: Coal mines and mining.

Relevance: 16.96%

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