TY  - BOOK
AU  - Webster, F.M.
TI  - The hessian fly in Ohio in 1899 and 1900
U1  - PA-C 595.77 D5 
KW  - Dipteros
KW  -  Colecciones de escritos  Hessian Flies
N1  - Sobreetiro de: Ohio Agri. Exp. Sta. bulletin; 119, 1900. Encuadernado con: Key to gall midges (A resume of studies I-VII, itonididae) / by Ephraím Porter Felt.                                               70-220
ER  -