Trivedi, R, N <br/><br/>
A textbook of environmental sciences 

 - New Delhi :  Anmol,  1993. 
 - ix,410p.;  22cm 
<br/><br/><label>ISBN: </label>81-7041-682-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Enviromental Education<br/>Biology
<br/><br/><label>Dewey Class. No.: </label>574.5  / TRI