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Targeting Lead in Solid Waste
Sigman, Hilary, (2003)
Socially Responsible Investments in Germany, Switzerland and the United States: An Analysis of Investment Funds and Indices
Schröder, Michael, (2003)
NAFTA (nordamerikanische Freihandelszone) ist zustandegekommen
Brand, Diana, (1994)
Measuring efficiency when competitive prices aggregate differences in product quality and risk
Hughes, Joseph P., (1999)
Measuring efficiency when market prices are subject to adverse selection
Hughes, Joseph P., (1997)
The comparative statics of the competitive, increasing-cost industry
Hughes, Joseph P., (1980)