Chiiki messhu tōkei chizu, jinkō bunpuzu (Shōwa 45-nen kokusei chōsa kekka). shutoken hen = Statistical maps on grid square basis, population distribution, 1970 population census of Japan
Muraoka Hirofumi ... [and others] ; Chiken Shigen Kankyō Kenkyū Bumon = Atlas of hydrothermal systems in Japan / Hirofumi Muraoka ... [and others] ; Institute for Geo-Resources and Environment