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Diffuse knapweed

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1.
Salmon River Knapweed Project environmental assessment
Published
[Ft. Jones, Calif.?] : Salmon River Ranger District, Klamath National Forest, [2000]
Online
http://purl.access.gpo.gov/GPO/LPS96386
Location
Yale Internet Resource >> None
Format
Books / Online
2.
Biological control of spotted and diffuse knapweeds
Published
[Washington, D.C.?] : U.S. Dept. of Agriculture, Animal and Plant Health Inspection Service, [1994]
Online
Online book
Online book
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online
3.
Allelochemicals : role in agriculture and forestry
Published
Washington, DC : American Chemical Society, 1987.
Online
Online book
Location
Yale Internet Resource >> None
Format
Books / Online