Birch aphids
By: prepared by Forest Service, Alaska Region.
Contributors: United States. Forest Service. Alaska Region.; United States. Dept. of Agriculture.
Series: Leaflet R10-TP -- 98.
Publisher: U.S. Dept. of Agriculture
Published: 2001
Place of publication: [Washington, D.C.?]
Language: eng
Subjects: Birch -- Diseases and pests -- Alaska; Forest insects -- Environmental aspects -- Alaska; Trees -- Diseases and pests -- Research -- Alaska
Notes: Shipping list no.: 2002-0138-P.

"August 2001."