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"Coal mines and mining" » "Coal eines and mining" (Expand Search)
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"Coal mines and mining" » "Coal eines and mining" (Expand Search)
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1by Muthmann, Erhard, 1938-
Published 1967[n.p., 1967]131 p. illus., diagrs. 20 cm.Subjects: “...Coal mines and mining....”
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2by Hollmann, Friedrich, 1929-
Published 1967Aachen, 1967.172 p. illus. maps.Subjects: “...Coal mines and mining Germany North Rhine-Westfalia....”
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3by Koppe, Uwe, 1937-
Published 1974Germany : Rheinisch-Westfälische Technische Hochschule Aachen, 1974.118 p. : ill. ; 21 cm.Subjects: “...Coal mines and mining Germany (West) Safety measures....”