The Hessian fly in West Virginia and how to Prevent Losses from its Ravages /
Hopkins, A D.
The Hessian fly in West Virginia and how to Prevent Losses from its Ravages / - Morgantown : A E S , 1916 - 450p :
Entomology
The Hessian fly in West Virginia and how to Prevent Losses from its Ravages / - Morgantown : A E S , 1916 - 450p :
Entomology