Observadores

• 

  Don Hertz

  https://aaronkincaid.com/%ec%8a%ac%eb%a1%af%ec%82%ac%ec%9d%b4%ed%8a%b8-%ec%9d%b8%ec%96%b4%eb%b2%a0%ea%b0%80%ec%8a%a4-%ec%8b%a0%eb%a2%b0%ed%95%a0-%ec%88%98-%ec%9e%88%eb%8a%94-%eb%a8%b9%ed%8a%80%ea%b2%80%ec%a6%9d-%ed%94%8c/