Rai, R K, et al. <br/><br/>
Environmental management, Vol.1: Physio-ecological facets 

 -  Rawat Publications, New Delhi  1992 
 - 292 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental problems & services; Social problems & services
<br/><br/><label>Dewey Class. No.: </label>363.7  RAI-E.1