Observadores

• 

  Tomoko David

  https://aiball.kr/%EC%84%B8%EB%B8%90%EB%8D%B0%EC%9D%B4%EC%A6%88%EB%B2%B3-%EC%8B%A0%EC%86%8D%EC%B6%9C%EA%B8%88-%EC%98%A8%EB%9D%BC%EC%9D%B8-%EC%B9%B4%EC%A7%80%EB%85%B8-%EC%9D%B4%EC%9A%A9%EC%9D%98-%EC%83%88%EB%A1%9C/