Western fertilizer handbook 
produced by Soil Improvement Committee California Fertilizer Association 
 - 7ª ed 
 - Danville (Illinois)  Interstate  1985 
 - 288 p.  il. col. y n.  23 cm 
<br/><br/><label>ISBN: </label>0813424909 
<br/><br/><label>Subjects--Index Terms: </label>Abonos