TY  - RPRT
TI  - Reconnaissance techniques for determining soil-gas radon concentrations: an example from Prince Georges County, Maryland
AU  - G.M. Reimer
PY  - 2012
DO  - 10.1029/gl017i006p00809
UR  - https://pubs.usgs.gov/publication/70015728
ID  - 70015728
ER  -