1
Published: 1992
Superior document: Hakkaisan chiiki no chishitsu [Karte]
2
Published: 1992
Superior document: Hakkaisan chiiki no chishitsu [Textbd.]
3
Published: 1992
Publisher: 地質調査所 / Chishitsu Chōsa sho
Superior document: Chiiki chishitsu kenkyū hōkōku : Niigata (7) 64