Practical geophysical subsurface exploration in logging road design and construction
By: by William B. Ayars.
Published: 1961
Language: eng
Number of pages: 41
Subjects: Forest roads -- Design and construction.
Notes: Typescript (photocopy).

"A paper submitted to Oregon State University in partial fulfillment of the requirements for the degree of Master of Forestry, 1961."

Bibliography: leaves 40-41.