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1	�@‘�•£—º“ñ�E‰–‘ò�Lˆê�E’†‘º—mˆê(1991) ŒU�¾ŠÛ‰ÎŽR‚Ì’nŽ¿‚ÆŠâ�Î. “ú–{‰ÎŽRŠw‰ï1991”N“x�t‹G‘å‰ï�u‰‰—\�e�W, 17.	�@	530
2	�@’†‘º—mˆê�E‘�•£—º“ñ�E‰–‘ò�Lˆê�E��•û˜a“¿�E�“‡–rŽ¡(1992) ŒU�¾ŠÛ‰ÎŽR‚Ì’nŽ¿‚ÆŠâ�Î. “È–ØŒ§—§”Ž•¨ŠÙŒ¤‹†•ñ���‘, 10, 29-48.	�@Nakamura, Y., Masubuchi, R., Shiozawa, S., Ogata, K. and Aoshima, M. (1992) Geology and Petrology of Kesamaru volcano, Nikko volcanic region, Japan. Geology of the Ashio Mountains, 29-48.	664