1
Published: 1992
Superior document: Ōsu chiiki no chishitsu [Textbd.]
2
Published: 1992
Superior document: Ōsu chiiki no chishitsu [Karte]
3
Published: 1992
Publisher: 地質調査所 / Chishitsu Chōsa sho
Superior document: Chiiki chishitsu kenkyū hōkōku : Akita (6) 80
4
Published: 1991
Superior document: 20 manbun no 1 chishitsu zufuku NK-54-18