Observadores

• 

  Leonida Greenwald

  https://drawtoto.com/%EC%95%88%EC%A0%84%ED%95%9C-%EB%A9%94%EC%9D%B4%EC%A0%80%EC%82%AC%EC%9D%B4%ED%8A%B8-%EC%9D%B4%EC%9A%A9%EC%9D%84-%EC%9C%84%ED%95%9C-%EA%BC%AD-%ED%95%84%EC%9A%94%ED%95%9C-%EB%A8%B9%ED%8A%80%EA%B2%80/