Encyclopaedia of environmental water pollution 

 - New Delhi:     Anmol Publications Pvt. Ltd.,     1996 
<br/><br/> Vol.1<br/>Vol.2<br/>Vol.3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Universal Decimal Class. No.: </label>R 628.19(031)  / N6.3