Observadores

• 

  Alejandro Julia

  https://uikyam.com/%ED%8C%8C%ED%8A%B8%ED%83%80%EC%9E%84%EC%9C%A0%ED%9D%A5%EC%95%8C%EB%B0%94-%EC%9C%A0%EB%A7%9D%ED%95%9C-%EC%97%AC%EC%84%B1-%EA%B5%AC%EC%9D%B8%EA%B5%AC%EC%A7%81-%EC%8B%9C%EC%9E%A5%EC%9D%98-%EB%B3%80/