TY  - BOOK
AU  - Metcalf, C. L.
TI  - Sytphidae of Maine second report: life history studies  
U1  - PA-C 595.77 D5 
CY  - Orono, Maine
PB  -  Agricultural Experiment Station
KW  - Dípteros
KW  -  Colecciones de escritos  Syrphidae
KW  -  Maine
N1  - Encuadernado con: Notes on american two-winged flies of the family sapromizidae/by J. R. Malloch
ER  -