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File:Eduardo Paolozzi's Ventilation Tower Sculpture, Pimlico Tube Station - London.jpg - Wikimedia Commons
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London underground ventilation shaft blending in with surrounding buildings University Hospital built Victorian era onto street Stock Photo - Alamy
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Inventive vents – Exhibition & book launch celebrating London's weird and wonderful ventilation shafts | Events | What's on | Building Centre
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Percentage of time when natural ventilation is pursuable in London:... | Download Scientific Diagram
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