Freezing resistance of tissues in the twig of Douglas-fir Pseudotsuga menziesii (Mirb.)Franco)
By: by John Norman Alden.
Published: 1971
Language: eng
Number of pages: 149
Subjects: Douglas fir.; Plants -- Frost resistance.
Notes: Typescript (photocopy).

Thesis (Ph. D.)--Oregon State University, 1971.

Includes bibliography.