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- SpringerLink (Online service)2,359
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- ebrary, Inc248
- World Health Organization246
- United States216
- National Cancer Institute (U.S.)198
- National Cancer Institute (U.S.). Division of Cancer Cause and Prevention162
- United Nations Environment Programme157
- National Institute for Occupational Safety and Health152
- International Program on Chemical Safety151
- International Labour Organisation143
- United States. Environmental Protection Agency130
- National Toxicology Program (U.S.)124
- United States. Agency for Toxic Substances and Disease Registry. Division of Toxicology122
- United States. Agency for Toxic Substances and Disease Registry, issuing body115
- Syracuse Research Corporation95
- Inter-Organization Programme for the Sound Management of Chemicals87
- Films for the Humanities & Sciences (Firm)78
- Infobase78
- United States. Agency for Toxic Substances and Disease Registry. Division of Toxicology and Environmental Medicine66