Biocriteria fact sheet : biological criteria : national program guidance for surface waters.

Bibliographic Details
Corporate Author:	United States. Environmental Protection Agency. Health and Ecological Criteria Division
Format:	Government Document eBook
Language:	English
Published:	[Washington, D.C.?] : EPA Office of Water, Office of Science & Technology, Health and Ecological Criteria Division, [1999]
Subjects:	Water quality biological assessment > United States. Water quality management > United States. Water quality > Standards > United States.
Online Access:	https://purl.fdlp.gov/GPO/LPS92215

Description
Item Description:	Title from title screen (viewed on Jan. 16, 2003). "May 1999." Electronic resource.
Physical Description:	1 electronic text : HTML file.
Format:	System requirements: WWW browser. Mode of access: Internet from the EPA web site. Address as of 3/18/08: http://www.epa.gov/bioindicators/html/biofacts.html ; current access available via PURL.