The blue alfalfa aphid
Subtitle: a new insect pest on alfalfa
By: Glenn Fisher and Dick Penrose.
Contributors: Penrose, Richard L. 1943-; Oregon State University. Extension Service.
Series: FS -- 243.; Fact sheet (Oregon State University. Extension Service) -- 243.
Publisher: Oregon State University, Extension Service
Published: 1978
Place of publication: Corvallis, OR
Language: eng
Subjects: Acyrthosiphon -- Northwest, Pacific.; Alfalfa -- Diseases and pests -- Northwest, Pacific.
Notes: Caption title.

"October 1978."