Наблюдатели

• 

  Willis Vandiver

  https://turnti.net/%ED%8D%BC%EB%B8%94%EB%A6%AD%EC%95%8C%EB%B0%94-%EC%83%88%EB%A1%9C%EC%9A%B4-%EC%9D%BC%EC%9E%90%EB%A6%AC%EC%9D%98-%ED%98%81%EC%8B%A0%EC%9D%84-%EB%A7%8C%EB%82%98%EB%8B%A4/