Tompkins , Peter   <br/><br/>
Secrets of the Soil 
/by Peter Tompkins and Christopher Bird 
 - New Delhi  Rupa.co  1989 
 - x,444p. 
<br/><br/><label>ISBN: </label>81-291-0563-2 
<br/><br/><label>Dewey Class. No.: </label>631.4  / TOM/S