Спостерігачі

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  Quentin Burkett

  https://ruuby.us/%EC%95%88%EC%A0%84%EB%86%80%EC%9D%B4%ED%84%B0%EC%9D%98-%EC%A4%91%EC%9A%94%EC%84%B1%EA%B3%BC-%EC%98%AC%EB%B0%94%EB%A5%B8-%EC%84%A0%ED%83%9D-%EB%B0%A9%EB%B2%95/