The Hessian fly : and how to prevent losses From it /
Walton, W. R
The Hessian fly : and how to prevent losses From it / W. R. Walton - Washington : Department of Agriculture - 16 p. - EUA. Dept. of Agriculture Farmers' bull.; 1083 .
203745
Phytophaga destructor Trigo -- Plagas
The Hessian fly : and how to prevent losses From it / W. R. Walton - Washington : Department of Agriculture - 16 p. - EUA. Dept. of Agriculture Farmers' bull.; 1083 .
203745
Phytophaga destructor Trigo -- Plagas