Gupta, P.K.  <br/><br/>
Methods in environmental analysis    : water, soil and air 
/ by  P.K. Gupta 
 - 2nd ed.  
 - Jodhpur:  Agrobios,   2007.  
 - 443p.  
<br/><br/><label>ISBN: </label>8177543083 
<br/><br/><label>Dewey Class. No.: </label>630.4  / GUP/M