TY  - RPRT
TI  - Contour maps of uranium, uranium-thorium ratio, and total field magnetics, Lake City area, San Juan Mountains, Colorado
AU  - William D. Heran
PY  - 1981
DO  - 10.3133/ofr81568
UR  - https://pubs.usgs.gov/publication/ofr81568
ID  - ofr81568
ER  -