Douglas fir seed germination after exposure to varying temperatures and humidities
By: by Denis P. Lavender.
Contributors: Oregon State Board of Forestry.
Series: Research note -- no. 18.; Research notes (Oregon State Board of Forestry) -- no. 18.
Publisher: Oregon State Board of Forestry
Published: 1954
Place of publication: [Salem, Or.]
Language: eng
Subjects: Douglas fir -- Seeds.; Germination.
Notes: Caption title.

"December 1954."