Norman E. Johnson

Identifiers

Open LibraryOL2136623A

Top Subjects

Balsam woolly adelgid -- Washington (State) (2)
Douglas fir -- Diseases and pests (2)
Forest management -- Northwest, Pacific (1)
Ponderosa pine -- Diseases and pests -- Control -- Northwest, Pacific (1)
Western pine beetle -- Control -- Northwest, Pacific (1)
Fir -- Diseases and pests -- Oregon (1)
Fir -- Diseases and pests -- Washington (State) (1)

Books by Norman E. Johnson

Total count: 7

Report on sanitation-salvage beetle control in the Ponderosa pine forests of the Pacific Northwest

1955-01-01
The balsam woolly aphid problem in Oregon and Washington

U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station1957-01-01
Ambrosia-beetle infestation of down coniferous timber in Benton County, Oregon

1957-01-01
Distribution of Sitka spruce weevil eggs on leaders of open grown Sitka spruce in southwest Washington

Weyerhaeuser Forestry Research Center1965-01-01
Effectiveness of three systemic insecticides for Douglas-fir cone and seed insect control

Weyerhaeuser Forestry Research Center1966-01-01
Douglas-fir cone insects and their control

Queen's Printer1967-01-01
The balsam woolly aphid on young Pacific silver fir in Washington

Weyerhaeuser Forestry Research Center1968-01-01