Alkaloid-bearing plants and their contained alkaloids /
by J.J. Willaman and Bernice G. Schubert.
- Washington : U.S. Dept. of Agriculture, 1961.
- 287 p. ; 23 cm.
- Technical bulletin / United States Department of Agriculture ; no. 1234 .
- Technical bulletin (United States. Department of Agriculture) ; no. 1234. .