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1
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2Published 1982Subjects: “...Coal liquefaction Congresses....”
Conference Proceeding Book -
3
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4
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5Published 1984Subjects: “...Coal Analysis Congresses....”
Conference Proceeding Book -
6
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7
Journal -
8
Serial -
9Published 1978Subjects: “...Coal gasification Germany (West)...”
Government Document Book -
10
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11
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12by Wolf, Michael, 1954-2019Subjects: “...Coal mines and mining Germany Bottrop History 20th century Pictorial works....”
Published 2012
Book -
13by Becher, Bernd, 1931-2007Subjects: “...Coal mines and mining Germany Hannover Pictorial works Exhibitions....”
Published 2010
Book