Das, Dilip Kumar <br/><br/>
Introductory soil science 
by Dilip Kumar Das 
 - 4th rev. ed.  reprinted, 2021 
 - Ludhiana:  Kalyani Publishers  2015 
 - 879p. 
<br/><br/><label>ISBN: </label>9789327257540 
<br/><br/><label>Dewey Class. No.: </label>J:1  / Q5