Quaintance, A. L. <br/><br/>
The oyster- shell scale and the scurfy scale  / 
by A. L. Quaintance and E. R. Sasscer 
 - Washington :   Department of Agriculture 
 - 16 p. 
 - Bulletin; 723 .
<br/><br/> Encuadernado con: Studies of life histories of froghoppers of Maine / Herbert Osborn. 
<br/><br/><label>LCCN: </label>204993 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arboles frutales -- plagas<br/>Insectos parásitos y predatores <br/>Lepidosaphes ulmi 
<br/><br/><label>Dewey Class. No.: </label>PA-C 595.7 B85