European apple canker
By: by C.E. Owens.
Contributors: Oregon Agricultural College. Extension Service.
Series: Cir -- 119.; Circular (Oregon Agricultural College. Extension Service) -- 119.
Publisher: Oregon Agricultural College, Extension Service
Published: 1918
Place of publication: Corvallis, OR
Language: eng
Subjects: European canker -- Oregon.; Apples -- Diseases and pests -- Oregon.
Notes: Caption title.

"May, 1918."