Text only also available via Internet from the EPA web site. Address as of 7/7/04: http://yosemite.epa.gov/ochp/ochpweb.nsf/content/tips.htm; current access is available via PURL.
Microfiche. [Washington, D.C.] : Supt. of Docs., U.S. G.P.O., 2004 1 microfiche : negative.