Biological criteria
Subtitle: research and regulation : December 12-13, 1990, Hyatt Regency Crystal City, Arlington, Virginia
By: sponsored by the Office of Water, U.S. Environmental Protection Agency.
Contributors: United States. Environmental Protection Agency. Office of Water.
Publisher: The Office
Published: 1991
Place of publication: Washington, DC
Language: eng
Format: Microform
Number of pages: 171
Subjects: Water -- Pollution -- Congresses.; Water quality -- Congresses.; Environmental protection -- Congresses.
Genres: Congresses.
Notes: At head or title: Proceedings of symposium.

"July 1991"--Cover.

"EPA-440/5-91-005"--Cover.

Includes bibliographical references and index.

Microfiche. Washington, D.C. : U.S. G.P.O., 1993. 2 microfiches : negative ; 11 x 15 cm.

s 1993 dcu n b.