http://reply.papertrans.cn/3/270/26922/26922-11.png
http://reply.papertrans.cn/3/270/26922/26922-12.png
http://reply.papertrans.cn/3/270/26922/26922-13.png
Submitted on: 02 May 2002.
Revised on: 10 May 2002.
Accepted on: 22 May 2002.
NULL
Submitted on: 11 October 2016.
Revised on: 21 October 2016.
Accepted on: 26 October 2016.
Revista Eletronica Pesquiseduca
Submitted on: 17 August 2004.
Revised on: 26 August 2004.
Accepted on: 20 September 2004.
NULL
http://reply.papertrans.cn/3/270/26922/26922-17.png
http://reply.papertrans.cn/3/270/26922/26922-18.png
Submitted on: 08 February 2009.
Revised on: 19 March 2009.
Accepted on: 28 March 2009.
NULL
Submitted on: 17 September 2022.
Revised on: 03 October 2022.
Accepted on: 21 October 2022.
Revista Eletronica Pesquiseduca