Dispersal of the spruce beetle, Dendroctonus rufipennis, and the engraver beetle, Ips perturbatus, in Alaska
By: Richard A. Werner and Edward H. Holsten
Contributors: Holsten, Edward H; Pacific Northwest Research Station (Portland, Or.)
Series: Research paper PNW -- RP-501; Research paper PNW -- 501
Publisher: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station
Published: 1997
Place of publication: Portland, Or. (333 S.W. First Ave., P.O. Box 3890, Portland 97208-3890)
Language: eng
Format: Microform
Subjects: Spruce beetle -- Dispersal -- Alaska; Bark beetles -- Dispersal -- Alaska; Trees -- Diseases and pests -- Alaska
Notes: Cover title

Shipping list no.: 98-0492-M

"September 1997."

Includes bibliographical references (p. 6-8)

Microfiche. [Washington, D.C.] : Supt. of Docs., U.S. G.P.O., [1998] 1 microfiche : negative