Спостерігачі

• 

  Reagan Dresdner

  https://cirandas.net/freettoio/blog/%EC%86%8C%EC%9E%90%EB%B3%B8-%EC%B0%BD%EC%97%85-%EB%A1%9C%EB%98%90%ED%8C%90%EB%A7%A4%EC%A0%90-%EC%82%AC%EC%9E%A5%EB%8B%98%EB%93%A4%EC%9D%98-%EC%86%94%EC%A7%81-%ED%9B%84%EA%B8%B0