About UTSUGAWA Takako
About Rissho Univ.
About SHIRAI Masaaki
About Tokyo Metropolitan Univ.
About Geographical Reports of Tokyo Metropolitan University
About river
About Tokyo Metropolis
About typhoon
About gravel
About sand bar
About roundness
About river bed
About sedimentation(accumulate)
About rafting
About mechanism
About wear
About gravel
About Tamagawa River
About Sedimentation Process
About wear mechanism
About Sedimentary petrology in general
About 多摩川
About 台風
About 砂礫
About 砂州
About 堆積学