TY  - BOOK
AU  - Mathis,Wayne N.
AU  - Simpson,Karl W.
TI  - Studies of Ephydrinae (Diptera : Ephydridae), V: the genera Cirrula Cresson and Dimecoenia Cresson in North America / 
PY  - 1981///
CY  - Washington
PB  - Smithsonian Institution Press
ER  -