Snowball, K. <br/><br/>
Nutrient deficiencies and toxicities in wheat :  a guide for field identification 
/by K. Snowball and A.D. Robson 
 - México, D. F. :  CIMMYT,  1991. 
 - 75 p. :  ilus.. 
<br/><br/><label>ISBN: </label>9686127488 
<br/><br/><label>LCCN: </label>80243 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plantas--Deficiencias nutritivas.<br/>Trigo--Elementos minerales.