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 · a, Vol.50, No.ll, P.1399 2005. 12h 12a 12C 12a2 12P2 12b2 17a 17b 11 16a2bI 18 8 pi 14b 14c 14d Hi, 2008. 2003. ! 3ñÊfE7 23,000B (3,OOOÐ0ff)

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