Gupta,P.K <br/><br/>
Methods in Environmental analysis water soil and air. 
P.K.Gupta 
 - India  Agrobios  2004 
 - 408p. 
<br/><br/> H.B 
<br/><br/><label>ISBN: </label>8177540556 
<br/><br/><label>Dewey Class. No.: </label>628.50287 GUP