Bulletin, Geological Survey of Japan 
 Chishitsu chosajo geppo 

 - IBARAKI :  GEOLOGICAL SURVEY OF JAPAN, 
 - Mensual 
<br/><br/><label>ISSN: </label>1346-4272 0016-7665 
 = Bulletin, Geological Survey of Japan 
<br/><br/><label>Subjects--Index Terms: </label>GEOLOGIA