http://reply.papertrans.cn/1/65/6475/6475-31.png
Submitted on: 02 December 2018.
Revised on: 05 February 2019.
Accepted on: 06 March 2019.
___________________CONTINUITY AND CHANGE---CAMBRIDGE UNIV PRESS
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Submitted on: 17 February 2011.
Revised on: 13 April 2011.
Accepted on: 30 April 2011.
___________________CONTINUITY AND CHANGE---CAMBRIDGE UNIV PRESS
Submitted on: 26 August 2015.
Revised on: 28 November 2015.
Accepted on: 15 December 2015.
___________________CONTINUITY AND CHANGE---CAMBRIDGE UNIV PRESS
http://reply.papertrans.cn/1/65/6475/6475-36.png