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Submitted on: 27 October 2009.
Revised on: 27 November 2009.
Accepted on: 21 January 2010.
___________________Collectivus-Revista de Ciencias Sociales
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Submitted on: 10 April 2013.
Revised on: 02 May 2013.
Accepted on: 20 May 2013.
___________________Collectivus-Revista de Ciencias Sociales
Submitted on: 19 May 1999.
Revised on: 22 July 1999.
Accepted on: 22 August 1999.
___________________Collectivus-Revista de Ciencias Sociales
Submitted on: 02 April 2008.
Revised on: 29 April 2008.
Accepted on: 19 June 2008.
___________________Collectivus-Revista de Ciencias Sociales
Submitted on: 27 October 2020.
Revised on: 02 February 2021.
Accepted on: 12 February 2021.
___________________Collectivus-Revista de Ciencias Sociales