1.
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prepared by the Research and Planning Division, Economic Commission for Europe
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2.
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Department of Economic and Social Affairs
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3.
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Department of Economic and Social Affairs
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4.
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United Nations
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5.
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United Nations. Dept. of Economic and Social Affairs
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6.
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United Nations. Statistical Office ; United Nations. Dept. of Economic and Social Information and Policy Analysis ; United Nations ; United Nations. Dept. of Economic and Social Affairs
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7.
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Department of International Economic and Social Affairs, Statistical Office = Département des affaires économiques et sociales internationales, Bureau de statistique
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