Summaries of papers 

 - Berkeley, Ca. :  University of California. Division of Agricultural Sciences,  1983 
 - 37 p. 
 - Special publication  ; 3282 .
 - Special publication  ; 3282 .
<br/><br/><label>LCCN: </label>69564 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Suelos--Elementos minerales.<br/>Suelos--Fertilidad.