Trivedi, R N <br/><br/>
Text Book of Environmental Sciences 

 - New Delhi  Anmol Publications  1997 
<br/><br/><label>Subjects--Uniform Titles: </label>--General stack
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental education--Science
<br/><br/><label>Dewey Class. No.: </label>333.7  / TRI-T