[ ƒgƒbƒv ] [ English ]

Š±aTB VŠƒ‰ΞŽRŠDƒOƒ‹[ƒv, 1983

‚Π‚έ‚Ό

Hi-TB Tephra Niigata Volcanic Ash Research Group, 1983

—ͺŒκ: Hi-TB