Clausen, C. P. <br/><br/>
The effect of host size upon the sex ration of hymenopterous parasit es and its relation to methods of rearing and colonialization / 
C. P . Clausen. 
 - [s.l :  s.n,  199?]. 
 - v. ;  30 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hymenoptera.
<br/><br/><label>Dewey Class. No.: </label>595.79