Effect of light quality and periodicity upon germination of Douglas-fir seed (Pseudotsuga menziesii (Mirb.) Franco) and on growth of Douglas-fir seedlings
By: by Le Roy Curtis Johnson.
Published: 1965
Language: eng
Number of pages: 85
Subjects: Germination.; Plants, Effect of light on.; Light, Colored.; Light -- Physiological effect.; Douglas fir.
Notes: Typescript.

Thesis (M.S.)--Oregon State University, 1965.

Bibliography: leaves 69-71.