Knowlton, George F. <br/><br/>
Notes on a few species of macrossphini (aphididae) from Utah with descriptions of two new species  / 
by George F. Knowlton 
 - 6 p. 
 - Aphididae; 18 .
<br/><br/> Sobretiro de: The Pan-Pacific Ent. 5 (2): 79-84, 1928. Encuadernado con otros impresos similares 
<br/><br/><label>LCCN: </label>205811 
<br/><br/><label>Subjects--Topical Terms: </label><br/>-- Afididos -- Colecciones de escritos -- Macrosiphum
<br/><br/><label>Dewey Class. No.: </label>PA-C 595.752 A6