Ambasht , R.S. <br/><br/>
Environment and pollution  an ecological approach 
R.S. Ambasht, P.K. Ambasht. 
 - 4th. ed. 
 - New Delhi  CBS Pub.  1939 
 - xi,375p.  photos  21cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental pollution Ecology. 
<br/><br/><label>Dewey Class. No.: </label>363.73  / A46E20