1
Published: 1970
Publisher: 地質調査所 / Chishitsu Chōsa sho
Superior document: Chiiki chishitsu kenkyū hōkōku : Akita (6) 3
2
Published: 1970
Superior document: Gojōme chiiki no chishitsu [Textbd.]
3
Published: 1970
Superior document: Gojōme chiiki no chishitsu [Karte]