Meadow knapweed (centaurea jacea x c. nigra)
By: [by Ben F. Roché, Cindy Talbott Roché]
Contributors: Roché, Cindy Talbott.; Washington State University. Cooperative Extension.; United States. Dept. of Agriculture.
Series: EB -- 1524; Extension bulletin (Washington State University. Cooperative Extension) -- 1524.
Publisher: Cooperative Extension, College of Agriculture & Home Economics, Washington State University
Published: 1989
Place of publication: Pullman
Language: eng
Subjects: Knapweeds; Knapweeds -- Control
Notes: Title from caption.

"Published June 1989"--P. [4].

"Issued by Washington State Cooperative Extension ... and the U.S. Department of Agriculture ..."--P. [4].