Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Environmental - Media - Air - Outdoor air pollution - Particulate matter Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Particulate Matter (PM) Research Subject The topic of the resource This EPA webpage on particulate matter (PM) research provides basic information. Topics include the components and types of particulate matter, the effects of PM on human and environmental health, the history of PM and controlling PM emissions. Description An account of the resource <a target="_blank" href="http://www.epa.gov/airscience/quick-finder/particulate-matter.htm" rel="noreferrer noopener">http://www.epa.gov/airscience/quick-finder/particulate-matter.htm</a>