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Там же; Friedman M., Friedman R.D. Two Lucky People, pp. 607-609.
The Political Economy of Policy Reform / Ed. J. Williamson. Washington, DC: Institute for International Economics, 1994. P. 467.
DeNavas-Walt C, Proctor B.D., Lee C.H. Income, Poverty and Health Insurance Coverage in the United States: 2005 // U.S. Census Bureau, August 2006, www.census.gov; World Factbook 2007, .