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1Published 1995.“…Institute of Political Studies,…”
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2Published 1992.“…Institute of political studies,…”
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3Published 2004“…Political Studies and Research Institute,…”
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4Published 2005“…Political Studies and Research Institute,…”
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5
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6Published 1971.“…Political and Economic Planning, Institute for Fiscal Studies,…”
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7Published 1994.“…Institute of political studies, Polish Academy of sciences,…”
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