The hawkweeds, or paintbrushes
By: Albert A. Hansen
Series: Department circular / United States Department of Agriculture -- 130; Department circular (United States. Dept. of Agriculture) -- 130.
Publisher: U.S. Dept. of Agriculture
Published: 1920
Place of publication: Washington, D.C
Language: eng
Subjects: Weed control; Pastures; Control; Weeds
Notes: "Contribution from the Bureau of Plant Industry (Office of Forage-Crop Investigations)."