Spruce needle aphid
By: prepared by Forest Service.
Contributors: United States. Forest Service.
Series: Alaska Region leaflet -- R 10-TP-3.; Alaska Region leaflet -- no. R 10-TP-3.
Publisher: U.S. Dept. of Agriculture
Published: 1987
Place of publication: [Washington, D.C.?]
Language: eng
Subjects: Sitka spruce -- Diseases and pests.; Aphididae.
Notes: Shipping list no.: 87-27-P.