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Date: 2014-12-09 21:45:04Mon Kampo list Advanced Pico Beena Japanese language Japanese dialects Japanese heraldry | PM2.5 1 PM2.5 Particulate matter 2.5 (PM2.5) refers to small particles in the air that are less than 2.5 micrometers (μm). It comes from sources such as ash and soot released from burning, and car exhaust.Add to Reading ListSource URL: www.pref.yamaguchi.lg.jpDownload Document from Source WebsiteFile Size: 339,93 KBShare Document on Facebook |