Trivedi, P. R <br/><br/>
Environmental air analysis  
/ by  P. R. Trivedi, Gurdeep  Raj 
 - 1st ed. 
 - New Delhi:   India, Akashdeep Publishing House;  1992. 
 - iv,179p. 
<br/><br/><label>ISBN: </label>81-7158-241-9 
<br/><br/><label>Dewey Class. No.: </label>363.7392   / TRI/E