Chatwal,G.R <br/><br/>
Encyclopaedia of environmental pollution & its control 

 - 5th Ed. 
 - New Delhi  Anmol Publication(P) Ltd.  1989 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Civil Engineering
<br/><br/><label>Dewey Class. No.: </label>621  / CH-E