TY  - BOOK
AU  - Hill, C. C.
TI  - The hessian fly in Pennsylvania
U1  - PA-C 595.77 D5 
CY  - Harrisburg, Pa.
PB  -  Department of Agriculture
KW  - Dipteros  Hessian flies
N1  - Encuadernado con otros impresos similares
ER  -