Purohit, S.S.. <br/><br/>
A Text Book of Environmental Sciences: As Per UGU Unified Syllabus /  Textual Documents 
S.S.Purohit, Q.J.Shammi & A.K.Agarwal. 
 - 1st ed. / 
 - Jodhpur :  Student edition ,  2004. 
 - 393p. ;  22cm. 
<br/><br/><label>Subjects--Index Terms: </label>Environmental Sciences G-Economics 
<br/><br/><label>Dewey Class. No.: </label>342.762  / Pu 975 Te