Manahan, Stanley E. <br/><br/>
Environmental education 
Nasrin. 
 - New Delhi  APH Publishing  [n.d.] 
 - xi, 234p., 23cm. 
<br/><br/><label>ISBN: </label>81-7648-064-9. 
<br/><br/><label>Dewey Class. No.: </label>372.357  / N26E