TY  - RPRT
TI  - Radium distribution and indoor radon in the Pacific Northwest
AU  - J. S. Duval
AU  - J. K. Otton
PY  - 2012
DO  - 10.1029/gl017i006p00801
UR  - https://pubs.usgs.gov/publication/70015928
ID  - 70015928
ER  -