TY  - RPRT
TI  - Zircon geochronology of Precambrian rocks in southeastern Wyoming and northern Colorado
AU  - Wayne R. Premo
AU  - W. R. Van Schmus
PY  - 1989
DO  - 10.1130/spe235-p13
UR  - https://pubs.usgs.gov/publication/70209581
ID  - 70209581
ER  -