Davis, John June <br/><br/>
Biological studies on three species of aphididae  / 
by John June Davis 
 - Washington :   EUA. Department of Agriculture 
 - 45 p. 
 - Aphidae; 6 Technical series; 12 .
<br/><br/> Encuadernado con otros impresos similares 
<br/><br/><label>LCCN: </label>207136 
<br/><br/><label>Subjects--Topical Terms: </label><br/>-- Afididos -- Colecciones de escritos -- Anuraphis maidi--radicis
<br/><br/><label>Dewey Class. No.: </label>PA-C 595.752 A6