Knowlton, G. F. <br/><br/>
Notes on Utah syrphidae  / 
by G. F. Knowlton and H. J. Pack 
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<br/><br/> Sobretiro de Pan-Pacific entomologist 6 (4): 182-189, 1930.                     Encuadernado con: Notes on american two-winged flies of the family sapromyzidae/by J. R. Malloch                                                74-61 
<br/><br/><label>LCCN: </label>201759 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Dípteros  Syrphidae--Utah
<br/><br/><label>Dewey Class. No.: </label>PA-C 595.77 D5