The balsam woolly aphid on young Pacific silver fir in Washington
By: by Norman E. Johnson and John G. Zingg.
Contributors: Zingg, John G.
Series: Weyerhaeuser forestry paper -- no. 13.
Publisher: Weyerhaeuser Forestry Research Center
Published: 1968
Place of publication: Centralia, Wash
Language: eng
Number of pages: 10
Subjects: Abies amabilis -- Diseases and pests -- Washington (State); Balsam woolly adelgid -- Washington (State)