A REVIEW OF SOME BIOLOGICAL METHODS FOR THE ASSESSMENT OF WATER QUALITY WITH SPECIAL REFERENCE... 

 - Wellington : Water & Soil Division,  1979 
 - 46p ; illus. 
 - Water & Soil Technical publication No. 18 .
<br/><br/><br/>ENG 
<br/><br/><label>ISBN: </label>0110-4144 
<br/><br/><label>Subjects--Topical Terms: </label><br/>NEW ZEALAND.<br/>WATER QUALITY - ASSESSMENT.