Comparison of Phellinus weirdi root rot damage in a 60-year-old Douglas-fir (Pseudotsuga menziesii) stand with the damage in the preceding old-growth stand
By: by Borys Myroslav Tkacz.
Published: 1979
Language: eng
Number of pages: 114
Subjects: Roots (Botany) -- Diseases and pests.; Douglas fir.
Notes: Typescript (photocopy).

Thesis (M.S.)--Oregon State University, 1980.

Includes bibliography.