Observadores

• 

  Werner Murry

  https://duxarea.com/%EC%A7%81%EC%9E%A5%EC%9D%B8%EB%8C%80%EC%B6%9C-%EB%8C%80%EC%B6%9C%EA%B8%B0%EA%B4%80-%EB%B9%84%EA%B5%90-%EC%B5%9C%EC%A0%81%EC%9D%98-%EC%84%A0%ED%83%9D%EC%9D%84-%EC%9C%84%ED%95%9C-%EA%B0%80%EC%9D%B4/