Guidelines for drinking water quality  drinking - water quality control in small - community supplies 
by World Health Organization. 
 - New Delhi  C.B.S  1991 
 - viii, 120p.; 22cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Drinking Water - Standers.
<br/><br/><label>Dewey Class. No.: </label>628.162  / G95G