About YANAGISAWA YUKIO
About 産業技術総合研
About HIRANAKA HIRONORI
About KUROKAWA KATSUKI
About 地質調査研究報告
About river
About Bacillariophyceae
About Niigata prefecture
About biostratigraphy
About stratum
About 音無川
About biostratigraphy
About 珪藻化石
About Miocene series
About 野村層
About Cenozoic
About 新潟
About 地域
About 分布
About 上部中新統
About 珪藻
About 化石層序