GEOLOGIC AGES OF THE TAISHU GROUP AND THE KATSUMOTO FORMATION IN THE TSUSHIMA AND IKI ISLANDS, OFF NORTHWEST KYUSHU ON THE BASIS OF PLANKTONIC FORAMINIFERS
Author's Organization:Department of Earth Sciences,College of General Education,Kyushu University Department of Earth Sciences,Faculty of Sciences,Yamagata University
Published: May 15, 1990Received: November 30, 1989Available on J-STAGE: April 11, 2008Accepted: February 19, 1990
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