Ashman,R.M. <br/><br/>
Essential Soil Science 

 - USA  Blackwell Publishing Company  2002 
<br/><br/><label>ISBN: </label>978-0-632-04885-4 
<br/><br/><label>LC Class. No.: </label>631.4/ASH  / 5 
<br/><br/><label>Dewey Class. No.: </label>631.4/ASH  / 5