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Filtering by: Subject Soil surveys -- Oregon -- Databases Decade 1930-1939

The relation of the productivity of certain soil areas in the Willamette Valley to the internal organization of farms in the region

Creator:

Fryer, Lee, 1908-2001

Resource Type:

Masters Thesis

Full Text:

generalizing the county soil survey naps on the basis of this grouping, and (2) designating hill soil areas