TY  - BOOK
AU  - Williston, Samuel W.
TI  - Manual of North American Diptera
U1  - 595.77 21st ed.
PY  - 1908///
CY  - New Haven
PB  - James T. Hathaway
KW  - Diptera
KW  - Flies
N1  - Index: pp 391-405
ER  -