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You searched for: Creator Personal Names Haas, Frank. Remove constraint Creator Personal Names: Haas, Frank. All Subjects Coal mines and mining--Silesia, Upper (Germany) Remove constraint All Subjects: Coal mines and mining--Silesia, Upper (Germany) Subject Topical Coal mines and mining--Silesia, Upper (Germany) Remove constraint Subject Topical: Coal mines and mining--Silesia, Upper (Germany)

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