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Submitted on: 29 May 2005.
Revised on: 10 June 2005.
Accepted on: 29 June 2005.
Revista Internacional de Contaminacion Ambiental
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Submitted on: 02 May 2016.
Revised on: 01 June 2016.
Accepted on: 26 June 2016.
Revista Internacional de Contaminacion Ambiental
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Submitted on: 11 January 2008.
Revised on: 26 January 2008.
Accepted on: 14 February 2008.
Revista Internacional de Contaminacion Ambiental
http://reply.papertrans.cn/3/271/27005/27005-19.png
Submitted on: 17 July 2010.
Revised on: 25 July 2010.
Accepted on: 07 August 2010.
Revista Internacional de Contaminacion Ambiental