http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Toxic materials in the atmosphere: sampling and analysis
Symposium on toxic materials in the atmosphere Boulder, Colo,US 1981
Spons. by ASTM Committee D-22 on Sampling and analysis of atmospheres
American society for testing and materials, Filadelfia, Pa.