1
Published: 1976
Superior document: Ugo Wada chiiki no chishitsu [Karte]
2
Published: 1976
Superior document: Ugo Wada chiiki no chishitsu [Textbd.]
3
Published: 1976
Publisher: 地質調査所 / Chishitsu Chōsa sho
Superior document: Chiiki chishitsu kenkyū hōkōku : Akita (6) 19
4
Published: 1977
Superior document: Akita chiiki no chishitsu [Karte]
5
Published: 1977
Superior document: Akita chiiki no chishitsu [Textbd.]
6
Published: 1977
Publisher: 地質調査所 / Chishitsu Chōsa sho
Superior document: Chiiki chishitsu kenkyū hōkōku : Akita (6) 11