Trivedi, P.R. <br/><br/>
Encyclopaedia of Environmental Sciences  : Vol 4 Environmental Air Pollution 

 - Delhi :   Akashdeep  Publishing House,   1992. 
 - iv, 296p.;  22cm 
<br/><br/><label>ISBN: </label>8171582796 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Human Ecology
<br/><br/><label>Dewey Class. No.: </label>304.203  / TRI