G.R. Chhatwal <br/><br/>
Encyclopaedia of environmental pollution and its control  

 - New Delhi  Anmol Publications Pvt Limited  1989 
 - Vol 3 
 -  Vol 2 .
<br/><br/>G.R. Chhatwal; M.C. Mehra; M. Satake & T. Katyal: Encyclopaedia of environmental pollution and its control.  New Delhi.  Anmol Publications Pvt Limited, 1989. 81-7041-243-9 Rs. 6--(363.7303CHH)   
<br/><br/><br/>ENGLISH 
<br/><br/><label>ISBN: </label>81-7041-243-9 
<br/><br/><label>Dewey Class. No.: </label>363.7303  / CHH