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Roland S.: Zeche Zollverein model
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Roland S.: Bubble hunter
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Roland S.: Zoom effect with bubbles
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Roland S.: Bubble storm
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Roland S.: Landschaftspark panorama
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Roland S.: Stripped cooling towers
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Roland S.: all about steel
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Roland S.: Mallow habitat
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Roland S.: Pithead tower in the rain
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Roland S.: pipe mess
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Roland S.: Bubble blast furnace
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Roland S.: Ballerinas
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Roland S.: Blast furnace
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Roland S.: Young shoots on the grid
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Roland S.: Bubble blaster