Forest spraying and some effects of DDT 

 - Ontario :  The Departmnet,  1949 
 - 174 p.  : ilus. ; mapa 
 - Division of research biological bulletin  ; 2 .
 - Division of research biological bulletin  ; 2 .
<br/><br/><label>LCCN: </label>72554 
<br/><br/><label>Subjects--Topical Terms: </label><br/>DDT (Insecticida)<br/>Insecticidas--Toxicidad.
<br/><br/><label>Dewey Class. No.: </label>632.95  / C35