Purohit, S.S. Q.J. Shammi, A.K. Agrawal <br/><br/>
A Text book of Environmental Sciences 
/ by S.S. Purohit 
 - Jodhpur :  Student Edition,  2004 
 - 397 p. 
<br/><br/><label>ISBN: </label>81-88826-14-6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>Environmental Science
<br/><br/><label>Dewey Class. No.: </label>577  / PUR-T