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[文献書誌] Oba,T.(共著): "Microstructure of perthites in the syeintes from the Yamato Mountains,East Antarctica." Proc.NIPR Symp.Antarct,Geosci.10. 121-130 (1997)
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[文献書誌] Oba,T.: "Note on rock-forming minerals in the Joetsu distict,Niigata Prefecture,Japam,(12)Mg-riebekfe from the Omi district." Bull.Joefsu Oniv.Educ.Vol.17.No1. 385-393 (1997)
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[文献書誌] Oba,T.: "Mineralogyof chondrulein OUellan(Tanezrouff)meteoite." Bull.Joefsu Univ.Educ.Vol.17,No2. 891-899 (1998)
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[文献書誌] Oba,T.: "Note on rock-forming minerals in the Joetsu district,Niigata Prefecture,Japan(13)Tremolite-actinolite from the kotaki-Omi district" Bull.Joetsu Univ.Educ.Vol.18,No1. 309-318 (1998)
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[文献書誌] 吉川和男(共著): "群馬県中之条町に分布する関東ローム層中の大隈石-(Mg)" 群馬大学研究紀要. 47. 103-112 (1999)
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[文献書誌] Oba,T.: "Chemistry of chromian spinel in picrite sillfrom Ogi,Sado island,Niigata Prefecture,Japan." Bull.Joetsu Univ.Educ.Vol.18,No2. 687-695 (1999)
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[文献書誌] Gupta,A.K.(共著): "Geochemical studies on synthetic and natural rock systems." Allied Publishers LTD,India, 283 (1997)