Population dynamics of the major North American needle-eating budworms
By: Robert W. Campbell.
Contributors: Pacific Northwest Research Station (Portland, Or.); United States. Forest Service.
Series: Research paper PNW -- RP-463.; Research paper PNW -- 463.
Publisher: U.S. Dept. of Agriculture, Pacific Northwest Research Station
Published: 1993
Place of publication: Portland, Or
Language: eng
Number of pages: 222
Subjects: Spruce budworm -- United States.; Western spruce budworm -- United States.
Notes: Shipping list no.: 93-1072-M.

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