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Air quality in New York City after the September 11, 2001 attacks : field hearing before the Subcomm

United States. Congress. Senate. Committee on Environment and Public Works. Subcommittee on Clean Air, Wetlands, and Climate Change.
Washington : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., [Congressional Sales Office], 2003. 2003

Assessing September 11th health effects : hearing before the Subcommittee on National Security, Emer

United States. Congress. House. Committee on Government Reform. Subcommittee on National Security, Emerging Threats, and International Relations.
Washington : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2005. 2005

Assessing September 11th health effects : what should be done? : hearing before the Subcommittee on

United States. Congress. House. Committee on Government Reform. Subcommittee on National Security, Emerging Threats, and International Relations.
Washington : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2004. 2004

Progress since September 11th : protecting public health and safety against terrorist attacks : hear

United States. Congress. House. Committee on Government Reform. Subcommittee on National Security, Emerging Threats, and International Relations.
Washington : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2006. 2006