Shepard, Harold H.  <br/><br/>
The chemistry and action of insecticides / 
Harold H. Shepard. 
 - London :   McGraw-hill book company,  c 1951. 
 - vii, 504 p. :  ill. ;  26 cm. 
<br/><br/> Include index. 
<br/><br/>340  340 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Modern physics.
<br/><br/><label>Dewey Class. No.: </label>543.5 / S47c