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17. Pesticides and groundwater : hearing before the Subcommittee on Toxic Substances and Environmental Oversight of the Committee on Environment and Public Works, United States Senate, Ninety-ninth Congress, second session, September 9, 1986

18. Pesticides and groundwater : hearing before the Subcommittee on Toxic Substances and Environmental Oversight of the Committee on Environment and Public Works, United States Senate, Ninety-ninth Congress, second session, September 9, 1986

44. Pesticides in groundwater : hearing before the Subcommittee on Oversight and Investigations of the Committee on Energy and Commerce, House of Representatives, One Hundred Second Congress, first session, May 8, 1991

77. Plutonium chemistry

78. Poison and the Pentagon

79. The poisoned dream, May 19, 1980