Method 1604 [electronic resource] : total coliforms and Escherichia coli in water by membrane filtration using a simultaneous detection technique (MI Medium).
Imprint
[Washington, D.C.] : United States, Environmental Protection Agency, Office of Water, [2002]
Mode of access: Internet from the EPA web site. Address as of 4/2/2004: http://epa.gov/waterscience/methods/biological/1604totalcoliformsscherichiacoli.pdf; current access available via PURL.