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Chicago [u.a.]: University of Chicago Press, 1989
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New York [u.a.]: National Bureau of Economic Research [u.a.], 1971
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New York: Nat. Bureau of Econ. Research, 1963- ; Princeton: Univ. Press, 1963-
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New York: Nat. Bureau of Econ. Research, 1963
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Los Angeles [u.a.]: SAGE, 2009
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[S.l.]: SSRN, [2011]
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[S.l.]: SSRN, [2010]
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[S.l.]: SSRN, [2010]
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[S.l.]: SSRN, [2010]
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Cambridge, Mass: National Bureau of Economic Research, April 2004
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Cambridge, Mass: National Bureau of Economic Research, February 1999
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Cambridge, Mass: National Bureau of Economic Research, August 1990
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Cambridge, Mass: National Bureau of Economic Research, March 1990
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Cambridge, Mass: National Bureau of Economic Research, April 1989
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Cambridge, Mass: National Bureau of Economic Research, November 1988
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Cambridge, Mass: National Bureau of Economic Research, March 1988
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Cambridge, Mass: National Bureau of Economic Research, June 1988
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Cambridge, Mass: National Bureau of Economic Research, July 1987
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Cambridge, Mass: National Bureau of Economic Research, May 1986
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Cambridge, Mass: National Bureau of Economic Research, November 1986