TY  - RPRT
TI  - Aerial radiometric color contour maps and composite color map of regional surface concentrations of uranium, potassium, and thorium in Ohio
AU  - J. S. Duval
PY  - 1987
DO  - 10.3133/gp966
UR  - https://pubs.usgs.gov/publication/gp966
ID  - gp966
ER  -