Roark, R. C. <br/><br/>
A third digest of the literature on DDT (January through june 1945)  / 
R. C. Roark, N. E. McIndoo 
 - Washington  :   Department of Agriculture 
 - 164 p. 
<br/><br/><label>LCCN: </label>203399 
<br/><br/><label>Subjects--Topical Terms: </label><br/>DDT  Insecticidas
<br/><br/><label>Dewey Class. No.: </label>PA 632.951 R64