Search Results

1

Growth of white fir after Douglas-fir tussock moth outbreaks : long-term records in the Sierra Nevada /

by Wickman, Boyd E.
[Portland, Or.] : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research, 1986

Government Document Book

2

Tree growth in thinned and unthinned white fir stands 20 years after a Douglas-fir tussock moth outbreak /

by Wickman, Boyd E.
Portland, Or. : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1988

Government Document Book

3

Forest health in the Blue Mountains : the influence of insects and diseases /

by Wickman, Boyd E.
Portland, Or. (333 S.W. First Ave., Portland 97208) : USDA Forest Service, Pacific Northwest Research Station, 1992

Government Document Book

4

Radial growth of grand fir and douglas-fir 10 years after defoliation by the douglas-fir tussock moth in the Blue Mountains outbreak /

by Wickman, Boyd E.
[Portland, Or.] : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1986

Government Document Book

5

The battle against bark beetles in Crater Lake National Park, 1925-34 /

by Wickman, Boyd E.
[Portland Or.] : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1990

Government Document Book

6

Northeastern Oregon bark beetle control project 1910-11 /

by Burke, H. E. (Harry Eugene), 1878-1963
Portland, Or. (319 S.W. Pine Street, P.O. Box 3890, Portland 97208) : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1990

Government Document Book

7

Natural regeneration 10 years after a Douglas-fir tussock moth outbreak in northeastern Oregon /

by Wickman, Boyd E.
[Portland, Or.] : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1986

Government Document Book

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