Stakman, Elvin Charles. <br/><br/>
Identification of physiologic races of Puccinia graminis tritici. 

 - Washington :  Bureau of Entomology and Plant Quarantine,  1944. 
 - 27 p. :  : ilus. 
<br/><br/><label>LCCN: </label>57566 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Puccinia graminis.<br/>Roya del trigo.<br/>Trigo--Variedades.