Toxic effect of St. Johnswort (Hypericum perforatum) on cattle and sheep
By: by C. Dwight Marsh and A.B. Clawson.
Contributors: Clawson, A. B.; United States. Dept. of Agriculture.
Series: Technical bulletin / United States Department of Agriculture -- no. 202; Technical bulletin (United States. Dept. of Agriculture) -- no. 202.
Publisher: U.S. Dept. of Agriculture
Published: 1930
Place of publication: Washington
Language: eng
Number of pages: 24
Subjects: Livestock poisoning plants.
Notes: Caption title.

Literature cited: p. 21-23.