Concepts in environment / 
edited by P R Trivedi & Gurdeep Raj. 
 - New Delhi :   Akashdeep Pub. House,   1992. 
 - 199p. :   ill. ;   22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Language.
<br/><br/><label>Dewey Class. No.: </label>304.2  / TRC 1992