Bystrak, Paul G. <br/><br/>
The North American species of forcipomyia, subgenus euprojoannisia (dipteria: ceratopogonidae)/ 
by Paul G. Bystrak and Wills W. Wirth 
 - Washington :  U.S. Govt. Print. Off.,  1978 
 - 51 p. :  illus. ;  24 cm. Prepared by science and education administration 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pure sciences<br/>Natural sciences
<br/><br/><label>Dewey Class. No.: </label>500.9