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Soils -- Oregon -- Willamette River Valley

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• Soils -- Oregon
• Willamette River Valley (Or.)

• Acid soils -- Oregon -- Willamette River Valley

• Soils of Chehalis series and their utilization (Agricultural Experiment Station, Oregon State Agricultural College, 1932), by W. L Powers and C. V. Ruzek (page images at HathiTrust; US access only)
• Meaning and use of Willamette soil survey (Agricultural Experiment Station, Oregon State Agricultural College, 1928), by E. F. Torgerson and W. L Powers (page images at HathiTrust)
• Composition, rating, and conservation of Willamette Valley soils (Oregon State System of Higher Education, Agricultural Experiment Station, Oregon State College, 1939), by W. L Powers, C. V. Ruzek, and J. S. Jones (page images at HathiTrust; US access only)

• A study of the biological activities in certain acid soils (Oregon Agricultural College Experiment Station, 1925), by William Vernal Halversen (page images at HathiTrust)

Items below (if any) are from related and broader terms.

• Mass movement response to forest management in the central Oregon coast ranges (Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, 1979), by Stuart Gresswell, Douglas N. Swanston, David Heller, United States Forest Service, and Or.) Pacific Northwest Forest and Range Experiment Station (Portland (page images at HathiTrust)
• Oregon soil investigations (Oregon Agricultural College Experiment Station., between 1000 and 1999), by Oregon State Agricultural College. Experiment Station (page images at HathiTrust)
• The soils of Oregon (Oregon Agricultural College Press, 1912), by C. E. Bradley (page images at HathiTrust)
• The "Red Hill" soils of western Oregon and their utilization (Agricultural Experiment Station, Oregon State Agricultural College, 1932), by C. V. Ruzek and W. L Powers (page images at HathiTrust; US access only)
• Identification and productivity of western Oregon soil types (Agricultural Experiment Station, Oregon State College, 1948), by W. L Powers, E. F. Torgerson, and E. V. Dannen (page images at HathiTrust; US access only)
• The fertility of Oregon soils (Oregon Agricultural Experiment Station, 1898), by G. W. Shaw (page images at HathiTrust)

• Physical and chemical properties of some Blue Mountain soils in the northeastern Oregon (Dept. of Agriculture, Forest Service, Pacific Forest and Range Experiment Station, 1978), by J. Michael Geist, Gerald S. Strickler, United States Forest Service, and Or.) Pacific Northwest Forest and Range Experiment Station (Portland (page images at HathiTrust)
• Chemical characteristics of some forest and grassland soils of Northeastern Oregon: I. Results from reference profile sampling on the Starkey Experimental Forest and Range (U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, 1970), by J. Michael Geist, Gerald S. Strickler, and Or.) Pacific Northwest Forest and Range Experiment Station (Portland (page images at HathiTrust)
• Chemical characteristics of some forest and grassland soils of Northeastern Oregon : II. Progress in defining variability in Tolo and Klicker soils (U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, 1974), by J. Michael Geist and Or.) Pacific Northwest Forest and Range Experiment Station (Portland (page images at HathiTrust)
• Oregon soil investigations (Oregon Agricultural College Experiment Station., between 1000 and 1999), by Oregon State Agricultural College. Experiment Station (page images at HathiTrust)

• Soil survey, Astoria area, Oregon (The Bureau, 1949), by James McWilliams, Carl J. McMurphy, E. F. Torgerson, Oregon State University. Agricultural Experiment Station, and Soils United States. Bureau of Plant Industry (page images at HathiTrust; US access only)

• Soil survey of Benton County, Oregon (G.P.O., 1924), by E. F. Torgerson, E. J. Carpenter, Oregon State University. Agricultural Experiment Station, and United States. Bureau of Soils (page images at HathiTrust; US access only)

• Soil survey of Clackamas County, Oregon (Govt. Print. Off., 1926), by E. J. Carpenter, K. S. Taylor, A. E. Kocher, Oregon State University. Agricultural Experiment Station, and United States. Bureau of Soils (page images at HathiTrust)
• Soil survey of Yamhill area, Oregon (For sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1974), by George E. Otte, United States. Soil Conservation Service, and Oregon State University. Agricultural Experiment Station (page images at HathiTrust)

• Soil survey of Clatsop County, Oregon (The Service, 1987), by Oregon State University. Agricultural Experiment Station and United States. Soil Conservation Service (page images at HathiTrust)

• Soil survey of Columbia County, Oregon (The Service, 1986), by Richard T. Smythe, Oregon State University. Agricultural Experiment Station, and United States. Soil Conservation Service (page images at HathiTrust)

• Soil survey of Coos County, Oregon (The Service, 1990), by John T. Haagen, Oregon State University. Agricultural Experiment Station, and United States. Soil Conservation Service (page images at HathiTrust)

• Soil survey, Prineville area, Oregon (U.S. Dept.of Agriculture, Soil Conservation Service, 1966), by George Kinnear Smith, Rudolph Walter Mayko, and United States. Soil Conservation Service (page images at HathiTrust)
• Soil survey of Trout Creek-Shaniko area, Oregon : (parts of Jefferson, Wasco, and Crook Counties) (United States Dept. of Agriculture, Soil Conservation Service, 1975), by George L. Green, Oregon State University. Agricultural Experiment Station, United States Forest Service, and United States. Soil Conservation Service (page images at HathiTrust)

• Soil survey, Deschutes area, Oregon. (U.S. Govt. Print. Off.], 1958), by A. E. Kocher, Willis Jay Leighty, and United States. Soil Conservation Service (page images at HathiTrust)

• Soil survey, South Umpqua area, Oregon (U.S. Forest Service; for sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1973), by Ellsworth Mark Richlen, Oregon State University. Agricultural Experiment Station, United States. Soil Conservation Service, and United States Forest Service (page images at HathiTrust)

• Soil survey of Grant County, Oregon, central part. (U.S. Dept. of Agriculture, Soil Conservation Service, 1981), by Eugene L. Dyksterhuis, Oregon State University. Agricultural Experiment Station, and United States. Soil Conservation Service (page images at HathiTrust)

• The soils of Jackson County (Oregon Agricultural College Experiment Station, 1920), by H. V. Tartar and F. C. Reimer (page images at HathiTrust)

• Soil survey of The Dalles orchard area, Oregon (Oregon State System of Higher Education, Agricultural Experiment Station, Oregon State College, 1944), by O. F. Bartholomew and Oregon State University. Agricultural Experiment Station (page images at HathiTrust; US access only)

• Soil survey of Yamhill area, Oregon (For sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1974), by George E. Otte, United States. Soil Conservation Service, and Oregon State University. Agricultural Experiment Station (page images at HathiTrust)

• Acid soils (Oregon Agricultural Experiment Station, 1906), by A. L. Knisely (page images at HathiTrust)

• The Hobart Butte high-alumina clay deposit, Lane County, Oregon (U.S. Dept. of the Interior, Geological Survey, 1951), by Victor T. Allen (page images at HathiTrust; US access only)

• Monitoring instream turbidity to estimate continuous suspended-sediment loads and yields and clay-water volumes in the upper North Santiam River basin, Oregon, 1998-2000 (U.S. Dept. of the Interior, U.S. Geological Survey ;, 2003), by Mark A. Uhrich, Heather M. Bragg, Geological Survey (U.S.), and Salem (Or.) (page images at HathiTrust)

• Influence of endrin on soil microbial populations and their activity (Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture, 1971), by W. B. Bollen, C. M. Tu, and Or.) Pacific Northwest Forest and Range Experiment Station (Portland (page images at HathiTrust)

• Humus for Oregon soils (Oregon State System of Higher Education, Agricultural Experiment Station, Oregon State Agricultural College, 1943), by R. E. Stephenson (page images at HathiTrust; US access only)

• Liming western Oregon soils (Oregon Agricultural Experiment Station, 1949), by R. E. Stephenson and W. L Powers (page images at HathiTrust; US access only)
• Liming western Oregon soils (Oregon State System of Higher Education, Agricultural Experiment Station, Oregon State Agricultural College, 1939), by R. E. Stephenson and W. L Powers (page images at HathiTrust; US access only)

• Oregon soil and water conservation needs inventory. (Published cooperatively by the Extension Service, Oregon State University, and the Soil Conservation Service, U. S. Dept. of Agriculture], 1962), by Oregon Conservation Needs Committee (page images at HathiTrust)
• Oregon's soil : a resource condition report (The Service, 1985), by United States. Soil Conservation Service (page images at HathiTrust)

• Erosion and sedimentation following road construction and timber harvest on unstable soils in three small western Oregon watersheds (Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture, 1970), by R. L. Fredriksen (page images at HathiTrust)
• Grass seeding and soil erosion in a steep, logged area in northeastern Oregon (Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, 1979), by J. D. Helvey, W. B. Fowler, United States Forest Service, and Or.) Pacific Northwest Forest and Range Experiment Station (Portland (page images at HathiTrust)
• Oregon's soil : a resource condition report (The Service, 1985), by United States. Soil Conservation Service (page images at HathiTrust)
• The Economic effect of soil erosion on wheat yields in eastern Oregon (Oregon State System of Higher Education, Agricultural Experiment Station, Oregon State Agricultural College, 1943), by Herman La Motte Thomas, United States. Soil Conservation Service, and Oregon State Board of Higher Education (page images at HathiTrust; US access only)

• Ammonification and nitrification studies of certain types of Oregon soils (Oregon Agricultural College Experiment Station, 1914), by T. D. Beckwith, A. F. Vass, and R. H. Robinson (page images at HathiTrust)
• Maintaining fertility of Grande Ronde Valley soils (Agricultural Experiment Station, Oregon State Agricultural College, 1933), by W. L Powers and D. E. Richards (page images at HathiTrust; US access only)
• Soil fertility in relation to productive land value (Agricultural Experiment Station, Oregon State Agricultural College, 1935), by W. L Powers (page images at HathiTrust; US access only)
• Crop rotation and soil fertility (Oregon Agricultural College, Experiment Station, 1923), by W. L Powers and C. V. Ruzek (page images at HathiTrust)

• Vegetation and soil condition changes on a subalpine grassland in Eastern Oregon (Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, 1961), by Gerald S. Strickler, United States Forest Service, and Or.) Pacific Northwest Forest and Range Experiment Station (Portland (page images at HathiTrust)

• Mass soil movements in the H.J. Andrews Experimental Forest (Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1967), by C. T. Dyrness and Or.) Pacific Northwest Forest and Range Experiment Station (Portland (page images at HathiTrust)

• Influence of endrin on soil microbial populations and their activity (Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture, 1971), by W. B. Bollen, C. M. Tu, and Or.) Pacific Northwest Forest and Range Experiment Station (Portland (page images at HathiTrust)

• Seed rain and seed bank of third- and fifth-order streams on the western slope of the Cascade Range (U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1995), by Janice M. Harmon, Jerry F. Franklin, and Or.) Pacific Northwest Research Station (Portland (page images at HathiTrust)

More items available under broader and related terms at left.