Stratified Douglas fir seed sown in April, May and June
By: by Jack F. Gartz.
Contributors: Oregon State Board of Forestry.
Series: Research note -- no. 19.; Research notes (Oregon State Board of Forestry) -- no. 19.
Publisher: Oregon State Board of Forestry
Published: 1955
Place of publication: Salem, Or
Language: eng
Number of pages: 19
Subjects: Douglas fir -- Seeds -- Oregon.; Seeds -- Stratification.
Notes: "January 1955."