Mason, Preston W.  1889- <br/><br/>
A revision of the North American aphids of the genus Myzus / 
by Preston W. Mason. 
 - Washington, D.C. :  U.S. Dept. of Agriculture,  1940. 
 - 31 p. :  ill. ;  23 cm. 
 - Miscellaneous publication / United States Department of Agriculture ;  no. 371 .
 - Miscellaneous publication (United States. Department of Agriculture) ;  no. 371. .
<br/><br/> Caption title.  Contribution from Bureau of Entomology and Plant Quarantine.  "The drawing ... were made by Amy Awl and H.B. Bradford."--Foot-note, p. 1.  Copy 2: Amer. Ent. Soc.  QL523.A6M3.  Includes index. 
<br/><br/>Bibliography: p. 21-22. 
<br/><br/><label>LCCN: </label>agr40000136  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Myzus--Classification.
<br/><br/><label>LC Class. No.: </label>QL523.A6  / M3 
<br/><br/><label>National Agricultural Library Call No.: </label>1  / Ag84M no.371