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Submitted on: 03 August 2011.
Revised on: 06 November 2011.
Accepted on: 03 December 2011.
___________________HELMINTHOLOGIA---SCIENDO
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Submitted on: 30 September 2006.
Revised on: 02 January 2007.
Accepted on: 15 January 2007.
___________________HELMINTHOLOGIA---SCIENDO
http://reply.papertrans.cn/2/113/11201/11201-35.png
http://reply.papertrans.cn/2/113/11201/11201-36.png