MAKE A MEME View Large Image Alum works Holtorfer Hardt.jpg en Painting of alum works at Holtorfer Hardt Bonn in midth 19th century http //www holtorf-ungarten de/geschichte/Kohle/braunkohle html Author mid 19th century Clearly old enough to be public domain PD-old ...
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Keywords: Alum works Holtorfer Hardt.jpg en Painting of alum works at Holtorfer Hardt Bonn in midth 19th century http //www holtorf-ungarten de/geschichte/Kohle/braunkohle html Author mid 19th century Clearly old enough to be public domain PD-old Alum Open-pit lignite mines in the Rhenish area
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