Collin, J. E. <br/><br/>
British flies :  Empididae / 
J. E. Collin,  
 - Cambridge [Eng.] :  University Press,  1961. 
 - viii, 782 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Empididae.
<br/><br/><label>Dewey Class. No.: </label>595.771  / COB 1961