Alexander, John D. <br/><br/>
Nitrogen-loss potential ratings for Illinois soils 

 - Urbana :  University of Illinois. Agricultural Experiment Station,  1987 
 - 83 p.  + 1 mapa 
 - University of Illinois bulletin  ; 784 .
 - University of Illinois bulletin  ; 784 .
<br/><br/><label>LCCN: </label>2439 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Suelos--Clasificación--Illinois.<br/>Suelos--Nitrógeno en.