TY  - RPRT
TI  - Contribution of 222Rn in domestic water supplies to 222Rn in indoor air in Colorado homes
AU  - E.P. Lawrence
AU  - R. B. Wanty
AU  - P. Nyberg
PY  - 1992
UR  - https://pubs.usgs.gov/publication/70016727
ID  - 70016727
ER  -