About MORIMOTO YU
About YAMAGUCHI TOSHIHIDE
About MURATA TOSHIYA
About TAKAHASHI SHUNSUKE
About OKAMOTO KAZUMASA
About FUJIYOSHI RYOKO
About 日本原子力学会秋の大会予稿集(CD-ROM)
About natural radioactivity
About potassium isotope
About environmental radioactivity
About isotopic ratio
About Plants
About depth distribution
About soil
About radioactivity measurement
About potassium 40
About isotopic ratio
About Measuring methods and instruments of natural radioactivity
About 植物
About 同位体比