Jones, Thomas H.  1885-1941. <br/><br/>
Elm bark beetles. 
[By T.H. Jones ... 
 - Washington,  U.S. Govt. Print. Off.,  1939] 
 - 8 p.  illus.  23 cm. 
 - United States. Dept. of Agriculture. Leaflet  no. 185 .
<br/><br/> Contribution from Bureau of Entomology and Plant Quarantine. 
<br/><br/><label>LCCN: </label>agr39000579  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Elm--Diseases and pests.
<br/><br/><label>LC Class. No.: </label>SB608.E5  / J6