TY  - BOOK
AU  - Gradstein, F. M., ed. 
TI  - The geologic time scale
SN  - 9780444594259
PY  - 2012///
CY  - Amsterdam
PB  - Elsevier
KW  - Geological TimeGeochronology
UR  - https://doi.org/10.1016/C2011-1-08249-8
ER  -