Gupta, P.K.  <br/><br/>
Methods in environmental analysis :   water, soil and air 
/ by  P.K. Gupta 
 - Jodhpur, India:  Agrobios,   2000.  
 - 409p.  
<br/><br/><label>ISBN: </label>8177543083 
<br/><br/><label>Dewey Class. No.: </label>363.7  / GUP/M