GUPTA, P.K. <br/><br/>
Soil, Plant, Water And Fertilizer Analysis 

 - 2nd ed 
 - India  Agrobios  2007 
 - 350p. 
<br/><br/><label>ISBN: </label>81-7754-306-7 
<br/><br/><label>Dewey Class. No.: </label>631.4