The European elm scale (Gossyparia spuria (Modeer))
By: A. D. Hopkins
Contributors: United States. Bureau of Entomology; United States. Bureau of Entomology and Plant Quarantine
Series: Forest entomology brief -- 46; Forest entomology brief -- 46.
Publisher: U.S. Department of Agriculture, Bureau of Entomology
Published: 1919
Place of publication: Washington, D.C
Language: eng
Subjects: Scale insects; Control; Elm; Diseases and pests
Notes: "July 14, 1919."

"E-186."