Willoughby, Phyllis A. <br/><br/>
Morphological and biological studies on two species of chlonaspis  / 
by Phyllis A. Willoughby and Micheal Kosztarab. 
 - Blacksburg, Va.:  : Virginia Polytechnic Institute and State Unive rsity ,  1974. 
 - iv, 83 p.  ;  23cm. 
 - Studies on the morphology and systematics of scale insects ;  no. 7 .
<br/><br/>Includes bibliographical references p. 81-83. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Scurfy scale--North America.
<br/><br/><label>Dewey Class. No.: </label>595.752 WIL