Identification and control of knapweed species in central and eastern Oregon
By: Amy Jo Waldo.
Contributors: Oregon State University. Extension Service.
Series: EC / Oregon State University Extension Service -- 1559.; Extension circular (Oregon State University. Extension Service) -- 1559.
Publisher: Oregon State University Extension Service
Published: 2003
Place of publication: [Corvallis, Or.]
Language: eng
Subjects: Knapweeds -- Control -- Oregon.; Knapweeds -- Identification -- Oregon.
Notes: Title from caption.

"February 2003."

Includes bibliographical references (p. [4]).

Also available on the World Wide Web.