TY  - RPRT
TI  - Natural gamma aeroradioactivity map of the Germantown and part of the Poolesville quadrangles, Montgomery and Frederick Counties, Maryland
AU  - Jean Blanchett
AU  - Andrew Griscom
AU  - F. C. Smith
PY  - 1966
DO  - 10.3133/gp567
UR  - https://pubs.usgs.gov/publication/gp567
ID  - gp567
ER  -