: / -80

-80

1989 . - , . . , . -80 , . . . .

-80, -80 , -80 . "" "" , -80, . - pH. - 80 , . -80 . -80 .

-80 . -80 . , . -80 . -80 15 . . , -80 . -80 , .

, -80 . : 1 10 1 -80, 1 " 54 1 -80 1 163 1 -80.

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