Controlled pollination of Douglas fir
Subtitle: a pictorial manual on technique
By: Kim K. Ching.
Contributors: Oregon Forest Research Center.
Series: Research note -- no. 40.; Research note (Oregon Forest Research Center) -- no. 40.
Publisher: Oregon Forest Research Center
Published: 1960
Place of publication: Corvallis, Or
Language: eng
Number of pages: 11
Subjects: Douglas fir -- Breeding.; Douglas fir -- Pollination.
Notes: Cover title.

"April 1960."