Ryūgūkai no himitsu
Subtitle: toyotamahime ga kataru kodai shinwa no shinjitsu
By: Ōkawa Ryūhō
Series: Kōkai reigen; Kōkai reigen
Publisher: Kōfukunokagakushuppan
Published: 2014
Place of publication: Tōkyō
Language: jpn
Number of pages: 181
ISBN-13: 9784863954540
Subjects: Geographical myths