NIELSEN,Donald R Ed <br/><br/>
Nitrogen in the Environment. Vol.2, Soil-Plant-Nitrogen relationship ed. 

 - London.  Academic Press, GB  1978 
 - (xiii),528 
<br/><br/><label>ISBN: </label>0-12-5184026 
<br/><br/><label>Dewey Class. No.: </label>631.84