TY  - RPRT
TI  - A preliminary report on methods of determining the age of Colorado plateau carnotite
AU  - Lorin Rollins Stieff
AU  - M.N. Girhard
AU  - T. W. Stern
PY  - 1950
DO  - 10.3133/tei108
UR  - https://pubs.usgs.gov/publication/tei108
ID  - tei108
ER  -