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r l fredriksen
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Cilt sonuçları
Erosion and sedimentation following road construction and timber harvest on unstable soils in three small western Oregon watersheds
R. L. Fredriksen · Pacific Northwest and Range Experiment Station, Forest Service
15 sayfa · 1970
Environmental aspects / Environmental aspects of Lumbering / Lumbering / Soil erosion
A case history of a mud and rock slide on an experimental watershed
R. L. Fredriksen · Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture
Sayfa sayısı yok · 1963
Environmental aspects / Environmental aspects of Landslides / Landslides / Sediment transport / Stream ecology
Christmas storm damage on the H.J. Andrews Experimental Forest
R. L. Fredriksen · Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture
11 sayfa · 1965
Flood damage / Storms
Soil, vegetation, and watershed management of the Douglas-fir region
R. L. Fredriksen · Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station
260 sayfa · 1979
Watershed management / Douglas fir / Forest soils