TY  - RPRT
TI  - National Geochronological Database
AU  - Jan Revised by Sloan
AU  - Christopher D. Henry
AU  - Melanie Hopkins
AU  - Steve Ludington
AU  - Robert E. Zartman
AU  - Charles A. Bush
AU  - Carl Abston
PY  - 2003
DO  - 10.3133/ofr03326_rev
UR  - https://pubs.usgs.gov/publication/ofr03326_rev
ID  - ofr03326_rev
ER  -