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Field Guide for the Identification of Snags and Lo...
作者
Catherine G. Parks
出版1997
ISBN
UCR:31210022663809
主題
Animals
How to Predict Population Trends
作者
Richard R. Mason
出版1983
ISBN
UIUC:30112019256871
主題
Douglas fir tussock moth
Save Our Birds, Save Our Forests
作者
Torolf R. Torgersen
出版1995
ISBN
OCLC:924462639
Parasite Records for the Douglas-fir Tussock Moth
作者
Torolf R. Torgersen
出版1981
ISBN
UIUC:30112104080764
主題
Douglas fir
Hemlock sawfly
作者
John S. Hard
出版1976
ISBN
STANFORD:36105129430190
Techniques for Monitoring the Environmental Impact...
作者
Paul R. Adamus / Richard R. Mason
出版1984
ISBN
UIUC:30112019249629
主題
Agriculture
Trees and Logs Important to Wildlife in the Interi...
作者
Evelyn L. Bull
出版1997
ISBN
MINN:31951D02974890Z
主題
Forest management
Identification of Parasites of the Douglas-fir Tus...
作者
Torolf R. Torgersen
出版1977
ISBN
MINN:31951D02995129D
主題
Douglas-fir tussock moth
Field and Laboratory Techniques for Evaluating Hem...
作者
John S. Hard / Torolf R. Torgersen
出版1975
ISBN
MINN:31951D02995449V
主題
Hemlock sawfly
Predation and Parasitization of Douglas-fir Tussoc...
作者
Torolf R. Torgersen / Richard R. Mason
出版1979
ISBN
UVA:X001754463
主題
Douglas fir tussock moth
The Bionomics of the European Pine Shoot Moth, Rhy...
作者
Torolf R. Torgersen
出版1964
ISBN
WISC:89099039067
主題
European pine shoot moth
Using Pheromone Traps to Detect and Evaluate Popul...
作者
Boyd E. Wickman / Charles P. Schwalbe / David R. Houston / H. Gene Paul / Jerald E. Dewey / Milton J. Stelzer / Richard R. Mason / Torolf R. Torgersen / United States. Dept. of Agriculture
出版1978
ISBN
UIUC:30112019249371
主題
Agriculture
Log Resources and Wildlife Relationships
作者
Torolf R. Torgersen
ISBN
OCLC:1039870594
Field Guide for the Identification of Snags and Lo...
作者
Catherine G. Parks / Evelyn L. Bull / Torolf R. Torgersen
出版Cascade Geographic Society, 1998-01-01
ISBN
0899049362 / 9780899049366
Parasite Records for the Douglas-fir Tussock Moth
作者
Torolf R. Torgersen
出版1981
ISBN
OCLC:833087574
Trees and Logs Important to Wildlife in the Interi...
作者
Evelyn L. Bull / Catherine G. Parks / Torolf R. Torgerson
出版Cascade Geographic Society, 1998-02
ISBN
0899047726 / 9780899047720
Diagnostic Features of the Subfamilies of Ichneumo...
作者
Henry Townes
出版1972
ISBN
OCLC:1039865742
The European Pine Shoot Moth in Wisconsin
作者
Torolf R. Torgersen
出版1965
ISBN
WISC:89099261497
主題
European pine shoot moth
Studies on Western Spruce Budworm Population Dynam...
作者
Charles R. Hatch / Robert W. Campbell
出版1983
ISBN
OCLC:1039814259
Patterns of Occurrence of the Western Spruce Budwo...
作者
Robert W. Campbell / Nilima Srivastava / Torolf R. Torgersen / R. C. Beckwith
出版1984
ISBN
OCLC:949261328
主題
Insect pests
Determining the Ratio of Actual to Expected Eggs o...
作者
Robert W. Campbell
出版1982
ISBN
OCLC:1039879547
Douglas-fir Tussock Moth Handbook
作者
Richard R. Mason / United States. Department of Agriculture / Torolf R. Torgersen
出版1983
ISBN
OCLC:220361425
主題
Douglas-fir tussock moth
Predation and Parasitization of Douglas-fir Tussoc...
作者
Torolf R. Torgersen / Richard R. Mason
出版1979
ISBN
OCLC:252066882
主題
Douglas fir tussock moth
Wildlife Habitats in Managed Rangelands
作者
David Sandberg / Donald C. Schmiege / Douglas L. Hunt / Franklin R. Ward / J. Edward Dealy / Kenneth W. Seidel / Lynette Anderson / Torolf R. Torgersen
出版1980
ISBN
OCLC:27125949
主題
Anadromous fishes
Douglas-fir Tussock Moth Handbook
作者
Torolf R. Torgersen / Richard R. Mason
出版1979
ISBN
OCLC:880106403
主題
Douglas fir tussock moth
Douglas-fir Tussock Moth Handbook
作者
Boyd E. Wickman / H. Gene Paul / Milton J. Stelzer / Richard R. Mason / Torolf R. Torgersen / Gary E. Daterman
出版1979
ISBN
OCLC:246319973
主題
Defoliation
Dynamics of Low-density Populations of the Douglas...
作者
Richard R. Mason / Torolf R. Torgersen
出版1978*
ISBN
OCLC:41742283
主題
Douglas fir tussock moth
Field and Laboratory Techniques for Evaluating Hem...
作者
John S. Hard / Torolf R. Torgersen
出版1975
ISBN
OCLC:631146612
主題
Hemlock sawfly
Preliminary Report for Canada/U.S. Spruce Budworms...
作者
Torolf R. Torgersen
ISBN
OCLC:961268471
主題
Western spruce budworm
Converting Brush and Hardwoods to Conifers on High...
作者
Edward J. Dimock / Farr, Wilbur A. / J. Alan Wagar / Paul H. Lane / Richard R. Mason / Richard W. Haynes / Torolf R. Torgersen / William R. Meehan / Richard O. Woodfin
出版1976
ISBN
OCLC:2709113
主題
Aerial fertilizing