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Koeln, 1976
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Köln: Bundesinstitut für Ostwissenschaftliche und Internationale Studien, 1989
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Paris: Organisation for Economic Co-operation and Development, 1997
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Bonn: Institute for the Study of Labor (IZA), 1999
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[Moskva]: [Izd. dom Vysšej školy ėkonomiki], [2020]
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Paris: OECD, Economics Dep., 2015
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Paris: OECD, 2013
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Bonn: Institute for the Study of Labor (IZA), 2001
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Paris: OECD, Economics Dep., 2015
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Bonn: Institute for the Study of Labor (IZA), 2001