ball we have to know about Ieodo, the hopeful island of Korea text ko 2023 2023 monographic eng 176 pages : illustration ; 24 cm. specialized Society of Ieodo Research BAHAN HADIAH Includes bibliographical references Socotra Rock (South Korea) Islands Korea (South) Geopolitics Korea (South) Marine resources Korea (South) 9791139215083 UMPSA 251103 20251125111016.0 eng