Metcalf, C. L. <br/><br/>
Sytphidae of Maine second report :   life history studies  / 
C. L. Metcalf 
 - Orono, Maine  :   Agricultural Experiment Station 
 - p. 153-176 + 5 láms. 
 - Díptera; 5 .
<br/><br/> Encuadernado con: Notes on american two-winged flies of the family sapromizidae/by J. R. Malloch 
<br/><br/><label>LCCN: </label>201758 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Dípteros -- Colecciones de escritos  Syrphidae -- Maine
<br/><br/><label>Dewey Class. No.: </label>PA-C 595.77 D5