Gill W. R. <br/><br/>
Soil Dynamics in Tillage & Traction 

 - 1 st 
 -  Scientific Publishers, Jodhpur  2013 
<br/><br/><label>ISBN: </label>81-7663-514-6 
<br/><br/><label>Dewey Class. No.: </label>631.4GIL