Hill, C. C. <br/><br/>
The hessian fly in Pennsylvania  / 
C. C. Hill and H. D. Smith 
 - Harrisburg, Pa.  :   Department of Agriculture 
 - 11 p. 
 - Díptera; 7 .
<br/><br/> Encuadernado con otros impresos similares 
<br/><br/><label>LCCN: </label>201750 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Dipteros  Hessian flies
<br/><br/><label>Dewey Class. No.: </label>PA-C 595.77 D5