Biological control of tansy ragwort
By: [prepared by D.L. Isaacson and D.T. Ehrensing, with support from Dept. of the Interior, BLM]
Contributors: Ehrensing, D. T.; Oregon. State Dept. of Agriculture.
Series: Weed control bulletin -- no. 1, 1977.
Publisher: Oregon Dept. of Agriculture
Published: 1977
Place of publication: Salem, OR
Language: eng
Subjects: Tansy ragwort -- Biological control -- Oregon.; Weeds -- Biological control -- Oregon.
Notes: Title from cover.