Наблюдатели

• 

  Valerie Giffen

  https://hoalra.com/%eb%b6%88%eb%b2%95%ec%b1%84%ea%b6%8c%ec%b6%94%ec%8b%ac%ec%9d%98-%ea%b7%b8%eb%a6%bc%ec%9e%90%ec%99%80-%ec%9d%b4%ec%a7%80%eb%a1%a0%ec%9d%98-%eb%b0%9d%ec%9d%80-%eb%8c%80%ec%95%88/