Hemlock woolly adelgid
By: technical advisor, photo credits, Mark McClure
Contributors: United States. State and Private Forestry. Northeastern Area
Series: Pest alert
Publisher: U.S. Dept. of Agriculture, Forest Service, Northeastern Area
Published: 1994
Place of publication: Durham, N.H.?]
Language: eng
Subjects: Tsuga; Diseases and pests; Eastern hemlock; Adelgidae
Notes: Caption title.

"NA-PR-03-94."