Ambasht, R.S. <br/><br/>
Environment and pollution  an ecological approach 
R.S. Ambasht, P.K. Ambasht. 
 - 4th. ed.. 
 - New Delhi  CBS Publications  2005 
 - xii, 323p.: ill.; 22cm. 
<br/><br/><label>ISBN: </label>8123912234 
<br/><br/><label>Dewey Class. No.: </label>363.73  / A46E