Atreya, B.D. <br/><br/>
Environmental Studies 

 - New Delhi:  National Council of Educational Research and Training,  1979. 
 - 64p.;  Col. ill.  24cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental Studies
<br/><br/><label>Dewey Class. No.: </label>372.357  / ENV