Bartlett, Blair R. <br/><br/>
Relation between natural enemies and DDT induced increases infrosted scale and other pests of walnuts / 
Blair R. Bartlett and J. C. Orte ga. 
 - [s.l :  s.n,  1952]. 
 - v. ;  30 cm. 
<br/><br/> Journal of Econ. Ento. v. 45(5), 1952. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pests-- Control.
<br/><br/><label>Dewey Class. No.: </label>632.9517