Pear leaf blister mite (Eriophyes pyri)
By: by A.L. Lovett.
Contributors: Oregon Agricultural College. Extension Service.
Series: Cir -- 144.; Circular (Oregon Agricultural College. Extension Service) -- 144.
Publisher: Oregon Agricultural College, Extension Service
Published: 1919
Place of publication: Corvallis, OR
Language: eng
Subjects: Eriophyes.; Pear -- Diseases and pests.; Apples -- Diseases and pests.
Notes: Caption title.

"March, 1919."