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National toxicology program : hearing before the Subcommittee on Investigation and Oversight of the Committee on Science and Technology, U.S. House of Representatives, Ninety-seventh Congress, first session, July 15, 1981
- "National toxicology program : hearing before the Subcommittee on Investigation and Oversight of the Committee on Science and Technology, U.S. House of Representatives, Ninety-seventh Congress, first session, July 15, 1981"@en
- "National toxicology program hearing before the Subcommittee on Investigation and Oversight of the Committee on Science and Technology, U.S. House of Representatives, Ninety-seventh Congress, first session, July 15, 1981"@en