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Bldg, 13-402, Dept, of Earth Science Education, Seoul National University, Gwanakgu Gwanakro 1, Seoul 151-748, Korea TEL : +82-2-880-7780, +82-2-882-7787
COPYRIGHT BY SEOUL. ALL RIGHTS RESERVED.
Bldg, 13-402, Dept, of Earth Science Education, Seoul National University, Gwanakgu Gwanakro 1, Seoul 151-748, Korea COPYRIGHT BY SEOUL. ALL RIGHTS RESERVED.