May, Curtis <br/><br/>
The dutch elm disease  / 
by Curtis May and G. F. Gravatt 
 - Washington  :   Department of Agriculture 
 - 10 p. 
 - EUA. Dep. of. Agri. Circular; 170 .
<br/><br/><label>LCCN: </label>203922 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Olmo -- Enfermedades