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New York, NY: Tower Publ., 1970
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Chicago [u.a.]: University of Chicago Press, 2002
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New York: Putnam, 1987
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Leipzig: Reclam, 2003
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New York; Heidelberg [u.a.]: Springer, 1989
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Bonn: Institute for the Study of Labor (IZA), 2012
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Bonn: Institute for the Study of Labor (IZA), 2010
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Claremont, CA: Claremont McKenna College, Department of Economics, 2002
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Cambridge, Mass: National Bureau of Economic Research, 2021
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2013
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Cambridge, Mass: National Bureau of Economic Research, January 2024
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2013
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Cambridge, Mass: National Bureau of Economic Research, 2021
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Cambridge, Mass: National Bureau of Economic Research, 2021
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Cambridge, Mass: National Bureau of Economic Research, November 2022
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Cambridge, Mass: National Bureau of Economic Research, October 2022
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Cambridge, Mass: National Bureau of Economic Research, 2021
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Cambridge, Mass: National Bureau of Economic Research, 2021
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Luxembourg: Publications Office of the European Union, 2020
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Cambridge, Mass: National Bureau of Economic Research, July 2022