Submitted on: 20 November 2000.
Revised on: 22 February 2001.
Accepted on: 19 March 2001.
___________________EARI-Educacion Artistica-Revista de Investigacion
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Submitted on: 15 August 1998.
Revised on: 26 October 1998.
Accepted on: 15 December 1998.
___________________EARI-Educacion Artistica-Revista de Investigacion
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Submitted on: 01 July 2018.
Revised on: 06 October 2018.
Accepted on: 25 October 2018.
___________________EARI-Educacion Artistica-Revista de Investigacion
Submitted on: 30 June 1999.
Revised on: 28 September 1999.
Accepted on: 20 November 1999.
___________________EARI-Educacion Artistica-Revista de Investigacion