Baerg, W.  J <br/><br/>
The biology of the maple leaf scale  / 
by W. J. Baerg 
 - Fayateville, Arkansas  :   Agricultural Experiment Station 
 - 14 p. 
 - Arkansas. Agric. Exp. Sta. Bulletin; 470 .
<br/><br/><label>LCCN: </label>204662 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pulvinaria innumerabilis  Maple -- Plagas