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6Trish Kelly, "The WTO, the Environment and Health and Safety Standards, "pp. 131 - 151.
7Gary Clyde Hufbauer, Jeffrey J. Schott, " North American Environment under NAFTA, "http ://www. iie. com/publications/papers/nafta - envicronment. htm.
8"Enlargement and Environment : Questions and Answers," http ://europa.eu. int/comm/enlargement.
9"NAFTA,Ten Years Later, "http ://www. ira.doc.gov/td/industry/OTEA/nafta/ETI. pdf.
