TY  - BOOK
AU  - Hill, C. C
AU  - Udine, E. J. Pinckney, J. S.
TI  - A method of estimating reduction in yield of wheat caused by Hessian fly infestation
CY  - Washington
PB  -  Department of Agriculture
KW  - Trigo
KW  -  Plagas  Phytophaga destructor
ER  -