Better monitoring techniques are needed to assess the quality of rivers and streams ; volume 1
Subtitle: report to the Congress : Summary
By: by the Comptroller General of the United States
Publisher: U.S. General Accounting Office
Published: 1981
Place of publication: Washington, D.C
Language: eng
Number of pages: 11
Subjects: Water quality -- Measurement
Notes: Cover title

"April 30, 1981"

"CED-81-30."

Includes bibliographical references