KOLAY AK <br/><br/>
BASIC CONCEPTS OF SOIL SCIENCE 

 - 2nd Ed. 
 - New Delhi  New Age International  Publishers, New Delhi   2002 
<br/><br/><label>ISBN: </label>81 224 1199 1 
<br/><br/><label>Dewey Class. No.: </label>551  / KOL/B