World Health Organisation <br/><br/>
Guidelines for Drinking- Water Quality 

 - 3rd. ed. 
 - Delhi  A.I.T.B.S Publisher & Distribution 
 - ill.; 515 p.; 
<br/><br/>Include index 
<br/><br/><label>ISBN: </label>8174733221 
<br/><br/><label>LC Class. No.: </label>TD 215  /  .W 62  2011