Photoperiodic responses of Douglas-fir (Pseudotsuga Menziesii (Mirb.) Franco) and Ponderosa pine (Pinus ponderosa) seedlings
By: by Douglas D. McCreary.
Published: 1976
Language: eng
Number of pages: 119
Subjects: Photoperiodism.
Notes: Typescript (photocopy).

Thesis (M.S.)--Oregon State University, 1976.

Includes bibliography.