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http://reply.papertrans.cn/1/73/7254/7254-12.png
Submitted on: 16 April 2012.
Revised on: 08 August 2012.
Accepted on: 28 August 2012.
___________________DEMOGRAPHY---DUKE UNIV PRESS
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Submitted on: 17 September 2005.
Revised on: 26 December 2005.
Accepted on: 31 January 2006.
___________________DEMOGRAPHY---DUKE UNIV PRESS
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Submitted on: 14 November 2001.
Revised on: 04 March 2002.
Accepted on: 30 April 2002.
___________________DEMOGRAPHY---DUKE UNIV PRESS
Submitted on: 07 January 2025.
Revised on: 14 April 2025.
Accepted on: 05 June 2025.
___________________DEMOGRAPHY---DUKE UNIV PRESS
Submitted on: 29 November 1999.
Revised on: 09 March 2000.
Accepted on: 07 May 2000.
___________________DEMOGRAPHY---DUKE UNIV PRESS
Submitted on: 21 June 2016.
Revised on: 30 July 2016.
Accepted on: 31 August 2016.
___________________DEMOGRAPHY---DUKE UNIV PRESS