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Keywords from Image Description:
Agricola. Georg Agricola Zwlf Bcher vom Berg und Httenwesen bers Carl Schiffner Berlin ff Scanned by Bibliothek fr Sozial und Wirtschaftsgeschichte Kln digitalis unikoeln de rights released to the public domain caption Die untere Kammer des ersten Ofens Die obere Kammer Glasstcke own assumed lcommons History of Glassmaking