Better monitoring techniques are needed to assess the quality of rivers and streams. 

 - [Washington, D.C.,  1981?-]. 
 - v. 
<br/><br/> Volume 1.  CRDP Program Historic Shelflist record. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water quality--Measurement.--United States
<br/><br/><label>Gov. Doc. Class. No.: </label>GA 1.13:CED-81-57/