http://reply.papertrans.cn/1/33/3206/3206-11.png
Submitted on: 02 December 2019.
Revised on: 11 March 2020.
Accepted on: 31 March 2020.
___________________Avances del Cesor---CENTRO ESTUDIOS SOCIALES REGIONALES
Submitted on: 24 December 2004.
Revised on: 20 March 2005.
Accepted on: 05 May 2005.
___________________Avances del Cesor---CENTRO ESTUDIOS SOCIALES REGIONALES
http://reply.papertrans.cn/1/33/3206/3206-14.png
http://reply.papertrans.cn/1/33/3206/3206-15.png
http://reply.papertrans.cn/1/33/3206/3206-16.png
Submitted on: 08 August 2012.
Revised on: 23 October 2012.
Accepted on: 13 December 2012.
___________________Avances del Cesor---CENTRO ESTUDIOS SOCIALES REGIONALES
Submitted on: 11 April 2020.
Revised on: 15 May 2020.
Accepted on: 13 June 2020.
___________________Avances del Cesor---CENTRO ESTUDIOS SOCIALES REGIONALES
http://reply.papertrans.cn/1/33/3206/3206-19.png
http://reply.papertrans.cn/1/33/3206/3206-20.png