TY  - BOOK
AU  - Painter, Reginald  H
TI  - Observations on the biology of the hessian fly
U1  - PA-C 595.77 D5 
CY  - 
PB  - 
KW  - Dipteros
KW  -  Colecciones de escritos  Hessian Flies
KW  -  Biología
N1  - Sobretiro de: Journal of economic entomology 23 (2): 326-328, 1930. Encuadernado con: Key to gall midges (A resume of studies I-VII, itonididae) /by Ephraim Porter Felt                                    70-215
ER  -