TY  - RPRT
TI  - Map showing radon potential of rocks and soils in Montgomery County, Maryland
AU  - L.C. Gundersen
AU  - G.M. Reimer
AU  - C.R. Wiggs
AU  - C. A. Rice
PY  - 1988
DO  - 10.3133/mf2043
UR  - https://pubs.usgs.gov/publication/mf2043
ID  - mf2043
ER  -