evidence: Barium and Barium Salts [...] ATSDR (Agency for Toxic Substances and Disease Registry). 1992. Toxicological Profile for Barium and Compounds. Agency for Toxic Substances and Disease Registry, U.S. Public Health and Service, Washington, DC. [...] RTECS (Registry of Toxic Effects of Chemical Substances). 1999. Barium chloride, dihydrate (CAS # 103610-37-2). RTECS # CQ8751000. National Institute for Occupational Safety and Health, U.S. Department of Health and Human Services, Cincinnati, OH.