http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Office of Air Quality Planning and Standards.
Environmental Research & Technology, Inc
iv, 20 pages : illustrations ; 14 x 22 cm.
prepared for the U.S. Environmental Protection Agency by Environmental Research & Technology, Inc. ; authors, David Strimaitis, Robert Bibbo, Robert McCann.