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Powers, W. L. (Wilbur Louis), b. 1887
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KeyWillametteValleySoilsChart.pdf
Creator:
Torgerson, E. F. (Edward Fritchoff), 1888-
,
Powers, W. L. (Wilbur Louis), b. 1887
, and
Oregon State Agricultural College. Agricultural Experiment Station
StationCircular90.pdf
Creator:
Torgerson, E. F. (Edward Fritchoff), 1888-
,
Powers, W. L. (Wilbur Louis), b. 1887
, and
Oregon State Agricultural College. Agricultural Experiment Station
Willamette-UmpquSoils.jpg
Creator:
Powers, W. L. (Wilbur Louis), b. 1887
,
Torgerson, E. F. (Edward Fritchoff), 1888-
,
Dannen, E. V. (Eugene Verle), 1914-
, and
Oregon State College. Agricultural Experiment Station
StationCircular175.pdf
Creator:
Powers, W. L. (Wilbur Louis), b. 1887
,
Torgerson, E. F. (Edward Fritchoff), 1888-
,
Dannen, E. V. (Eugene Verle), 1914-
, and
Oregon State College. Agricultural Experiment Station
Map.pdf
Creator:
Oregon State College. Agricultural Experiment Station
,
Hill, William W.
, and
Powers, W. L. (Wilbur Louis), b. 1887
StationBulletin530.pdf
Creator:
Oregon State College. Agricultural Experiment Station
,
Hill, William W.
, and
Powers, W. L. (Wilbur Louis), b. 1887
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Powers, W. L. (Wilbur Louis), B. 1887
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Oregon State College. Agricultural Experiment Station
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