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London, United Kingdom - January 15 2018: London Underground Ventilation Shafts at Vauxhall Station Stock Photo - Alamy
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Percentage of time when natural ventilation is pursuable in London:... | Download Scientific Diagram
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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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View of family of red (extractor) and blue (intake) ventilation ducts on London Wall (north) side. 88 Wood Street, City of London, United Kingdom. Arc 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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Puits de ventilation colorés - 88 Wood Street, City of London, Angleterre, Royaume-Uni Photo Stock - Alamy
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Better ventilation could be key for London Underground to manage air quality, finds new study | University of Surrey
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