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(20% ) . 2% .

1 , 30-60 .

7, 10, 10 ; 8, 9 , . 30 .

. , , , , , . , , 2, 5, 7, 10, 10. 7, 8, 10, 10, 8 9.

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: ... . 4- . / . . . . .: ,2012. 1024 .: . 2012

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