Description
Item Description:Title from title screen (viewed on Mar. 10, 2009).
"January 2005."
"EPA/600/R-04/1790."
Electronic resource.
Physical Description:xii, 74 pages : digital, PDF file.
Format:Mode of access: Internet from the EPA web site. Address as of 3/10/09: http://www.epa.gov/ada/download/reports/600R04179/600R04179.pdf ; current access available via PURL.
Bibliography:Includes bibliographical references (pages 69-73).