Observerare

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  Nathan Philp

  https://mrblog.top/%EB%B0%94%EC%B9%B4%EB%9D%BC-%EC%8A%B9%EB%A5%A0-%EC%B5%9C%EA%B3%A0%EC%9D%98-%EC%A0%84%EB%9E%B5%EA%B3%BC-%ED%8C%A8%ED%84%B4-%EB%B6%84%EC%84%9D/