Water quality assessments :  a guide to the use of biota, sediments and water in environmental monitoring / 
edited by Deborah Chapman 
 - London :  Chapman & Hall,  1992 
 - 585 p. ;  25 cm. 
<br/><br/> Published on behalf of UNESCO United Nations Educational, Scientific and Cultural Organization, WHO World Health Organization, UNEP United Nations Environmental Programme 
<br/><br/><label>ISBN: </label>0412448408 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water quality--Measurement