Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
이 지역의 등진선의는 지진의 강도를 나타냅니다.i jiyeog-ui deungjinseonui-neun jijin-ui gangdo-reul natanabnida.The isoseismal line in this area indicates the intensity of the earthquake.