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Submitted on: 28 September 2019.
Revised on: 15 November 2019.
Accepted on: 31 December 2019.
___________________Cliometrica---SPRINGER HEIDELBERG
Submitted on: 19 August 2007.
Revised on: 08 October 2007.
Accepted on: 28 October 2007.
___________________Cliometrica---SPRINGER HEIDELBERG
Submitted on: 07 August 2005.
Revised on: 18 November 2005.
Accepted on: 16 December 2005.
___________________Cliometrica---SPRINGER HEIDELBERG
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Submitted on: 06 April 1998.
Revised on: 06 May 1998.
Accepted on: 19 May 1998.
___________________Cliometrica---SPRINGER HEIDELBERG
Submitted on: 03 April 2010.
Revised on: 17 July 2010.
Accepted on: 21 August 2010.
___________________Cliometrica---SPRINGER HEIDELBERG
Submitted on: 02 October 1999.
Revised on: 26 January 2000.
Accepted on: 15 March 2000.
___________________Cliometrica---SPRINGER HEIDELBERG
Submitted on: 13 April 2006.
Revised on: 10 July 2006.
Accepted on: 28 July 2006.
___________________Cliometrica---SPRINGER HEIDELBERG
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