Karr, James R <br/><br/>
Restoring life in running waters: better biological monitoring 

 - 1st 
 - Washington  Island press  1999 
 - xiv,206 p. 
<br/><br/><label>ISBN: </label>1-55963-674-2 
<br/><br/><label>Subjects--Index Terms: </label>Water quality biological assessment