http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Sulfur oxides and suspended particulate matter
WHO Task Group on Environmental Health Criteria for Sulfur Oxides and Suspended Particulate Matter
"Published under the joint sponsorship of the United Nations Environment Programme and the World Health Organization."
"A WHO Task Group on Environmental Health Criteria for Sulfur Oxides and Suspended Particulate Matter met in Geneva from 6 to 12 January 1976"--P. 8.
Includes bibliographical references (pages 94-107).