TY  - RPRT
TI  - Natural gamma aeroradioactivity map of the Frenchtown and part of the Riegelsville quadrangles, New Jersey and Pennsylvania
AU  - G. R. Boynton
AU  - D.R. Pittillo
AU  - G. L. Zandle
PY  - 1966
DO  - 10.3133/gp571
UR  - https://pubs.usgs.gov/publication/gp571
ID  - gp571
ER  -