Canada thistle (Carduus arvensis)
By: by J.R. Nevius.
Contributors: Oregon Agricultural College. Extension Service.
Series: Cir -- 155.; Circular (Oregon Agricultural College. Extension Service) -- 155.
Publisher: Oregon Agricultural College, Extension Service
Published: 1922
Place of publication: Corvallis, OR
Language: eng
Subjects: Canada thistle -- Control -- Oregon.
Notes: Caption title.

"May, 1922."