TY  - RPRT
TI  - Uranium and thorium in Precambrian crystalline rocks of the Medicine Bow Mountains, north-central Colorado
AU  - M. E. McCallum
AU  - A.L. Burch
PY  - 1980
DO  - 10.3133/ofr80458
UR  - https://pubs.usgs.gov/publication/ofr80458
ID  - ofr80458
ER  -