[Washington, D.C.] : United States Environmental Protection Agency, Office of Water, [2000]
OCLC
ocm56402791
Title from title screen (viewed on Sep. 1, 2004).
"May 2000."
"EPA 816-K-00-001."
Mode of access: Internet from the EPA web site. Address as of 9/1/2004: http://www.epa.gov/safewater/agua/apsalud.html; current access available via PURL.