The adulteration of insect powder with powdered daisy flowers (Chrysanthemum leucanthemum L.)
By: by R.C. Roark and G.L. Keenan
Contributors: Keenan, George Lawrence, 1886-
Edition: Rev. May 1923.
Series: Bulletin / United States Department of Agriculture -- no. 795; Department bulletin (United States. Dept. of Agriculture) -- no. 795.
Publisher: U.S. Dept. of Agriculture
Published: 1923
Place of publication: Washington, D.C
Language: eng
Number of pages: 10
Subjects: Pyrethrum (Insecticide); Insecticides; Daisies
Notes: Caption title.

"July 28, 1919."