Some environmental factors affecting development and emergence of the Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins (Coleoptera: Scolytidae), in the laboratory
By: by Roger Baker Ryan.
Published: 1959
Language: eng
Number of pages: 62
Subjects: Douglas fir beetle.
Notes: Typescript.

Thesis (M.S.)--Oregon State College, 1959.

Bibliography: leaves 48-53.