Description
Item Description:"January 2004."
"EPA 600/R-04/059."
Title from title screen (viewed on Mar. 23, 2006).
Electronic resource.
Physical Description:1 volume (various pagings) : digital, PDF file.
Format:Mode of access: Internet from the EPA web site. Address as of 3/23/2006: http://www.epa.gov/ord/NRMRL/pubs/600r04059/600r04059.htm; current access available via PURL.
Bibliography:Includes bibliographical references.