Water quality surveys :  a guide for the collection and interpretation of water quality data / 
prepared by the IHD-WHO Working Group on Quality of Water. 
 - Paris : Geneva :  Paris : Geneva :  Unesco ; WHO,  Unesco ; WHO,  1978. 
 - Studies and reports in hydrology ;  23 .
<br/><br/>Includes bibliographies. 
<br/><br/><label>ISBN: </label>9231014730 
<br/><br/><label>LCCN: </label>78318787 
<br/><br/><label>Nat. Bib. No.: </label>F*** 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water quality -- Measurement.--Water quality -- Measurement.
<br/><br/><label>LC Class. No.: </label>TD367  / .I13 1978 
<br/><br/><label>Dewey Class. No.: </label>628.1/61