TY  - GEN
AU  - Murayama,N
TI  - Mean level of natural radioactivity in the surface air in Japan
SN  - 0449-3060
PY  - 1967///0415
KW  - Air Pollution, Radioactive
KW  - Humans
KW  - Japan
KW  - Radiation Monitoring
N1  - Publication Type: Journal Article
UR  - https://doi.org/10.1269/jrr.7.1
ER  -