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Canada thistle : cirsium arvense (L.) Scop.; Breea arvensis (L.) Lessing, BMPs
Weed profile: Canada thistle
Colorado. Division of Parks and Outdoor Recreation.
Colorado State Parks
Revised: April 1, 2005
"Date Created: April 25, 2003. Revised: April 1, 2005. Author: Various. Parks affected: All."
Bibliography: page 4.
Description based on online resource; title from PDF caption; (viewed January 2015)
1 online resource (4 pages) : illustration
Best management practices (Colorado. Division of Parks and Outdoor Recreation)