TY  - RPRT
TI  - Preliminary thorium daughter contour map and profiles of the Hicks Dome area, Hardin County, Illinois
AU  - James A. Pitkin
PY  - 1974
DO  - 10.3133/ofr74157
UR  - https://pubs.usgs.gov/publication/ofr74157
ID  - ofr74157
ER  -