Medan Office to conduct joint earthquake research in Samosir Island.
The significance of research projects on earthquake potential in the island, located in the middle of Lake Toba, North Sumatra, is so obvious, according to …

Medan Office to conduct joint earthquake research in Samosir Island.
The significance of research projects on earthquake potential in the island, located in the middle of Lake Toba, North Sumatra, is so obvious, according to …