Osaka City Universitysci.osaka-cu.ac.jp/geos/geo2/pdfs/OHT95.pdfvolumes, their emplacement...
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Osaka City Universitysci.osaka-cu.ac.jp/geos/geo2/pdfs/OHT95.pdfvolumes, their emplacement mechanisms have so far been discussed by many authors as so-called "space problem" (cf. Paterson