Genetic variations in length of active growth period among races of Douglas fir, Pseudotsuga menziesii (Mirb.) Franco
By: by Helge Irgens-Moller.
Published: 1958
Language: eng
Number of pages: 156
Subjects: Douglas fir.; Growth (Plants).
Notes: Typescript.

Thesis (Ph. D.)--Oregon State College, 1958.

Bibliography: leaves 147-153.