Description
Item Description:Title from title screen (viewed on Oct. 14, 2004).
"April 2000."
"April 2002"--Text, 1st screen.
Electronic resource.
Format:Mode of access: Internet from the PHPPO web site. Addresses as of 10/14/04: http://www.phppo.cdc.gov/phtn/casestudies/graphics/cover2d.pdf (cover), http://www.phppo.cdc.gov/phtn/casestudies/graphics/ecolis.pdf (text); current access available via PURLs.