Influences of tillage system, climate, and soils on the demand for topsoil in northcentral Oregon wheat production
By: by Michael S. Hanrahan.
Published: 1985
Language: eng
Number of pages: 196
Subjects: Conservation tillage -- Oregon.; Wheat -- Oregon -- Soils.
Notes: Typescript (photocopy).

Thesis (Ph. D.)--Oregon State University, 1986.

Bibliography: leaves 168-177.