Population dynamics of the major North American needle-eating budworms
By: Robert W. Campbell
Contributors: Pacific Northwest Research Station (Portland, Or.)
Series: Research paper PNW -- RP-463; Research paper PNW -- 463
Publisher: USDA Forest Service, Pacific Northwest Research Station
Published: 1993
Place of publication: Portland, Or. (P.O. Box 3890, Portland 97208-3890)
Language: eng
Format: Microform
Number of pages: 222
Subjects: Western spruce budworm -- North America; Spruce budworm -- North America; Jack pine budworm -- North America; Insect populations -- North America
Notes: Distributed to depository libraries in microfiche

Shipping list no.: 93-1072-M

Includes bibliographical references (p. 175-207) and indexes

Microfiche. [Washington, D.C.?] : Supt. of Docs., U.S. G.P.O., [1993] 3 microfiches : negative