BLEAK, A. T. (1976) Toxicity of introduced nitro-containing Astragalus to sheep, cattle and chicks. Journal of Range Management 29,30-33 WILLIAMS, M. C., JAMES, L. F. & BOND, B. 0. (1979) Emory Milkvetch (Astragalus emoryanus var emoryanus) poisoning in chicks, sheep, and cattle.