U.S. Department of Agriculture. <br/><br/>
A Revision of the New World Mealybugs of the Genus Rhizoecus (Homoptera : Pseudococcidae) Technical Bulletin No. 1522 

 -  U.S. Dept. of Agriculture.  1976 
<br/><br/><label>Dewey Class. No.: </label>U.S