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Abies concolor > Diseases and pests > California
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Ferrell, George T.
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Current results range from 1973 to 1989

1.
Ten-year risk-rating systems for California red fir and white fir : development and use
Author
Ferrell, George T.
Published
[Berkeley, Calif.] : U.S. Dept. of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station, 1989.
Online
Online book
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online
2.
Gouty pitch midge damage to ponderosa pines planted on fertile and infertile soils in the western Sierra Nevada
Author
Ferrell, George T.
Published
Berkeley, Calif. : U.S. Dept. of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station, [1987]
Online
Online book
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online
3.
Black pineleaf scale
Author
Ferrell, George T.
Published
[Washington, D.C.?] : U.S. Dept. of Agriculture, Forest Service, 1986.
Online
Online book
Location
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Format
Books / Online
4.
Fir engraver
Author
Ferrell, George T.
Published
[Washington, D.C.] : U.S. Dept. of Agriculture, Forest Service, [1986]
Online
Online book
Location
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Format
Books / Online
5.
Using indicator plants to assess susceptibility of California red fir and white fir to the fir engraver beetle
Author
Ferrell, George T.
Published
Berkeley, Calif. : U.S. Dept. of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station, [1986]
Online
Online book
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online
6.
Growth classification systems for red fir and white fir in northern California
Author
Ferrell, George T.
Published
Berkeley, Calif. : U.S. Dept. of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station, [1983]
Online
Online book
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online
7.
Stem volume losses in grand firs topkilled by western spruce budworm in Idaho
Author
Ferrell, George T.
Published
Berkeley, Calif. : U.S. Dept. of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station, [1982]
Online
Online book
Location
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Format
Books / Online
8.
Growth of white firs defoliated by modoc budworm in northeastern California
Author
Ferrell, George T.
Published
Berkeley, Calif. : U.S. Dept. of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station, [1980]
Online
Online book
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online
9.
Risk-rating systems for mature red fir and white fir in northern California
Author
Ferrell, George T.
Published
Berkeley, Calif. : U.S. Dept. of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station, [1980]
Online
Online book
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online
10.
Stand and tree characteristics influencing density of fir engraver beetle attack scars in white fir
Author
Ferrell, George T.
Published
Berkeley, Calif. : Pacific Southwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1973.
Online
Online book
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online