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Sources of Particulate Pollution Miscellany
Bay Area regulators may ban open-air fireplaces
Economic Charts, Graphs, and Maps 2015

wood smoke is largest source of fine particulates in winter      web

webhttp://ww4.hdnux.com/photos/35/43/23/7746763/21/920x1240.jpg
publicationSan Francisco Chronicle
date2015-03-31

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