Parasites and predators of Dendroctonus ponderosae Hopkins (Coleoptera : Scolytidae) in ponderosa pine
By: by Ronald Forrest Billings.
Published: 1970
Language: eng
Number of pages: 75
Subjects: Ponderosa pine -- Diseases and pests.; Bark beetles.
Notes: Typescript.

Mounted photographs.

Thesis (M.S.)--Oregon State University, 1970.

Bibliography: leaves 67-73.