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File:2015-02-14 06 37 24 Street light post with both sodium vapor and mercury vapor lights in the Roy's parking lot in Elko, Nevada.JPG - Wikimedia Commons
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No Safe Pedestrian Access sign under gloomy green glow light street lamp, mercury vapour with dim green off white glow. Scotland, UK, night scene Stock Photo - Alamy
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File:2014-12-20 15 47 55 Mercury vapor street lights active during the day at the New Jersey Department of Transportation Headquarters along Parkway Avenue (Mercer County Route 634) in Ewing, New Jersey.JPG - Wikimedia Commons
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What is a Mercury Vapor Light Bulb?
