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1
True fir spacing and yield trials : 20-year update /
by Curtis, Robert O.
Portland, OR : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 2013

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Government Document Book
2
Stand development 18 years after gap creation in a uniform Douglas-fir plantation /
by Curtis, Robert O., Harrington, Constance A., Brodie, Leslie C.
Portland, OR : United States Department of Agriculture, Forest Service, Pacific Northwest Research Station, 2018

Government Document Book
3
Development of top heights and corresponding diameters in high-elevation noble fir plantations /
by Curtis, Robert O.
Portland, OR : United States Department of Agriculture, Forest Service, Pacific Northwest Research Station, 2015

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Government Document Book
4
Relation of initial spacing and relative stand density indices to stand characteristics in a Douglas-fir plantation spacing trial /
by Curtis, Robert O., Bansal, Sheel, Harrington, Constance A.
Portland, OR : U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 2016

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Government Document Book
5
Levels-of-growing-stock cooperative study in Douglas-fir
by Curtis, Robert O.
Portland, Or. (333 S.W. First Ave., P.O.Box 3890, Portland 97208) : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1992

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Government Document Book
6
Height growth and site index curves for western white pine in the Cascade Range of Washington and Oregon
by Curtis, Robert O.
[Portland, Or.] : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1990

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Government Document Book
7
Levels-of-growing-stock cooperative study in douglas-fir : report no. 8-the LOGS study : twenty-year results /
by Curtis, Robert O.
Portland, Or. : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1986

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Government Document Book
8
Extended rotations and culmination age of coast Douglas-fir old studies speak to current issues /
by Curtis, Robert O.
[Portland, Or.] (333 S.W. First Ave., P.O. Box 3890, Portland 97208-3890) : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1995

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Government Document Book
9
Height growth and site index curves for red alder /
by Harrington, Constance A.
Portland, Or. : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1986

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Government Document Book
10
Levels-of-growing-stock cooperative study in Douglas-fir.
by Curtis, Robert O.
Portland, Or. : Pacific Northwest Forest and Range Experiment Station, 1987

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Government Document Book
11
Extended rotations and culmination age of coast Douglas-fir : old studies speak to current issues /
by Curtis, Robert O.
[Portland, Or.] (333 S.W. First Ave., P.O. Box 3890, Portland 97208-3890) : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1995

Government Document Book
12
Height growth and site index curves for western white pine in the Cascade Range of Washington and Oregon /
by Curtis, Robert O.
[Portland, Or.] : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1990

Government Document Book
13
Levels-of-growing-stock cooperative study in douglas-fir : report no. 11--Stampede Creek : a 20-year progress report /
by Curtis, Robert O.
Portland, Or. : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1992

Government Document Book
14
Silviculture for multiple objectives in the Douglas-fir region /
Portland, Or. : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1998

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Government Document Book
15
Levels-of-growing-stock cooperative study in Douglas-fir : report no. 19--the Iron Creek study, 1966-2006 /
by Curtis, Robert O.
Portland, OR : United States Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 2009

Government Document Book
16
True fir spacing trials : 10-year results /
by Curtis, Robert O.
[Portland, Or.] : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 2008

Government Document Book
17
Levels-of-growing-stock cooperative study in Douglas-fir
by Curtis, Robert O.
Portland, Or. (333 S.W. First Ave., P.O.Box 3890, Portland 97208) : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1992

This item is not available through EZBorrow. Please contact your institution’s interlibrary loan office for further assistance.
Government Document Book
18
Silviculture for multiple objectives in the Douglas-fir region /
Portland, Or. : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1998

This item is not available through EZBorrow. Please contact your institution’s interlibrary loan office for further assistance.
Government Document Book
19
True fir-hemlock spacing trials : design and first results /
by Curtis, Robert O.
[Washington, D.C.] : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 2000

Government Document Book
20
Levels-of-growing-stock cooperative study in Douglas-fir
by Marshall, David D.
Portland, Or. (333 S.W. First Ave., P.O.Box 3890, Portland 97208) : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 2002

This item is not available through EZBorrow. Please contact your institution’s interlibrary loan office for further assistance.
Government Document Book
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