Observerare

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  German Ramsden

  https://groo.xyz/%ec%9d%b8%ec%b2%9c%ec%97%90%ec%84%9c-%ec%a6%90%ea%b8%b0%eb%8a%94-%ec%95%bc%ea%b0%84-%ec%95%84%eb%a5%b4%eb%b0%94%ec%9d%b4%ed%8a%b8%ec%9d%98-%eb%a7%a4%eb%a0%a5/