1
Published: [2012]
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2
Published: 2012.
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3
Published: [2013]
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4
Published: 1982.
Superior document: Report / Committee on Population and Demography ; no. 17
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5
Published: 2008.
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6
Published: c2006.
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7
Published: c2005.
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8
Published: 1995.
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9
Published: [2013]
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10
Published: [2012]
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11
Published: 2010.
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12
Published: 2000.
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