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Bart Pettman: Ruhr Area 1
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Bart Pettman: Ruhr Area 2
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Bart Pettman: Ruhr Area 3
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Bart Pettman: Ruhr Area 4
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Bart Pettman: Ruhr Area 5
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Bart Pettman: Ruhr Area Scale Model
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Bart Pettman: Ruhr Area 6
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Bart Pettman: Ruhr Area 7
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Bart Pettman: Ruhr Area 8