A Review of some biological methods for the assessment of water quality with special reference to New Zealand / 
Standing Biological Working Party of the Water Resources Council. 
 - 2 volumes (46; 58 pages) :  illustrations ;  30 cm. 
 - Water & soil technical publication,  no. 18, 22  0110-4144 ; .
 - Water & soil technical publication ;  no. 18. Water & soil technical publication ;  no. 22. .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water--Analysis.<br/>Water quality<br/>Water quality bioassay
<br/><br/><label>Dewey Class. No.: </label>628.161