Ross, W. A. <br/><br/>
Recomendations for the use of DDT against agricultural insect pests in 1947 

 - Ottawa :  Department of Agriculture. Division of Entomology,  1947 
 - 5 p. 
 - Processed publications  ; 64 .
 - Processed publications  ; 64 .
<br/><br/><label>LCCN: </label>53185 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Control de plagas.<br/>DDT (Insecticida)