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Small particulates are of particular importance because they may be in the respirable size range. These small particles may contain biologically active elements and compounds. Furthermore, they tend to remain in the atmosphere where they interfere with both solar and terrestrial infrared radiation, which may affect climate on a global basis.<\/jats:p>","DOI":"10.1126\/science.170.3955.289","type":"journal-article","created":{"date-parts":[[2006,10,5]],"date-time":"2006-10-05T12:56:56Z","timestamp":1160053016000},"page":"289-296","source":"Crossref","is-referenced-by-count":37,"title":["Air Pollution Surveillance Systems"],"prefix":"10.1126","volume":"170","author":[{"given":"George B.","family":"Morgan","sequence":"first","affiliation":[{"name":"U.S. Department of Health, Education, and Welfare National Air Pollution Control Administration, Bureau of Criteria and Standards, Division of Air Quality and Emission Data, Cincinnati, Ohio"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Guntis","family":"Ozolins","sequence":"additional","affiliation":[{"name":"U.S. Department of Health, Education, and Welfare National Air Pollution Control Administration, Bureau of Criteria and Standards, Division of Air Quality and Emission Data, Cincinnati, Ohio"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Elbert C.","family":"Tabor","sequence":"additional","affiliation":[{"name":"U.S. Department of Health, Education, and Welfare National Air Pollution Control Administration, Bureau of Criteria and Standards, Division of Air Quality and Emission Data, Cincinnati, Ohio"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"221","reference":[{"key":"e_1_2_1_1_1","unstructured":"Air Quality Criteria for Particulate Matter (1969)."},{"key":"e_1_2_1_2_1","unstructured":"Air Quality Criteria for Sulfur Oxides (1970)."},{"key":"e_1_2_1_3_1","unstructured":"National Emission Reference File (1970)."},{"key":"e_1_2_1_4_1","unstructured":"The National Air Pollution Potential Forecast Program (1970)."},{"key":"e_1_2_1_5_1","unstructured":"1968 Data Tabulations and Summaries Continuous Air Monitoring Project Chicago Air Pollution Technical Document 69-15 (1969)."},{"key":"e_1_2_1_6_1","unstructured":"Continuous Air Monitoring Project Cincinnati Air Pollution Technical Document 69-16 (1969)."},{"key":"e_1_2_1_7_1","unstructured":"Continuous Air Monitoring Project Denver Air Pollution Technical Document 69-17 (1969)."},{"key":"e_1_2_1_8_1","unstructured":"Continuous Air Monitoring Project Philadelphia Air Pollution Technical Document 69-18 (1969)."},{"key":"e_1_2_1_9_1","doi-asserted-by":"crossref","unstructured":"Continuous Air Monitoring Project St. Louis Air Pollution Technical Document 69-19 (1969).","DOI":"10.1080\/00022470.1969.10466461"},{"key":"e_1_2_1_10_1","unstructured":"Continuous Air Monitoring Project Washington D.C. 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