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
Language: eng
Number of pages: 222
Subjects: Western spruce budworm -- North America.; Spruce budworm -- North America.; Jack pine budworm -- North America.; Insect populations -- North America.
Notes: Includes bibliographical references (p. 175-207) and indexes.