Description
Published:Issue 2 (Nov. 1997)-Issue 18 (Feb. 2007).
Item Description:Title from title screen (viewed Oct. 23, 2002).
Description based on: Issue 2 (Nov. 1997); title from caption (viewed on Oct. 23, 2002).
Description based on: Issue 2 (Nov. 1997); title from title screen (viewed on Oct. 23, 2002).
Electronic resource.
Physical Description:Also issued in print.
Publication Frequency:Semiannual
Format:Mode of access: Internet at the EPA web site. Address as of 10/23/02: http://www.epa.gov/opptintr/epp/documents/docupdates.htm ; current access is available via PURL.