Bouldin, David. <br/><br/>
The influence of subsoil acidity on crop yield potencial 

 - Ithaca :  New York State College of Agriculture and Life Sciences,  1979 
 - 17 h.  ; gráfs. 
 - Cornell International Agriculture Bulletin  ; 34 .
 - Cornell International Agriculture Bulletin  ; 34 .
<br/><br/> Fotocopia 
<br/><br/><label>LCCN: </label>21678 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cultivos--Rendimiento.<br/>Suelos--Acidez.