Rate of multiplication of the Hessian fly [Phytophaga destructor Say]
By: By W.R. McConnell ...
Series: U.S. Dept. of agriculture. Bulletin -- no. 1008. -- Professional paper [from old catalog]
Publisher: [Govt. print. off.]
Published: 1921
Place of publication: Washington
Language: eng
Subjects: Hessian flies. [from old catalog]