Whitten, R. R <br/><br/>
Toxic and repellent sprays for the control of elm bark beetles  / 
by R. R. Whitten 
 - Washington  :   Department of Agriculure 
 - 12 p. 
 - EUA. Dept. of Agriculture Circular; 647 .
<br/><br/><label>LCCN: </label>202912 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Scolytus multistriatus  Control de plagas  Pesticidas -- Toxicidad   Escarabajos