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????????, ????, ??? . 1991. ????????? ? ???????? ???????? ???????. ?????????????? ??????????? / ???????????????? ??????????? / Contrastive linguistics 16. (?????????????? ??????????? / ???????????????? ??????????? / Contrastive Linguistics). 6?8.

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??????, ????? & ????  ????????, ???-?? . 1986. ??????? ?????. ?????????????? ??????????? / ???????????????? ??????????? / Contrastive linguistics 11. (?????????????? ??????????? / ???????????????? ??????????? / Contrastive Linguistics). 127?128.