Effects of defoliation by the pine butterfly (Neophasia menapia Felder) upon ponderosa pine
By: by James C. Evenden.
Published: 1936
Language: eng
Number of pages: 37
Subjects: Ponderosa pine -- Diseases and pests.; Pine butterfly.
Notes: Typescript.

Thesis (F.E.)--Oregon State College, 1936.

Bibliography: leaves 36-37.