TY  - GEN
AU  - Gradstein, Felix M...[et.al]; ed.,
TI  - Geologic time scale 2012
SN  - 9780444594259
PY  - 2012///
CY  - Oxford
PB  - Elsevier
KW  - Planet earth - History
KW  - Geological time
KW  - Stratigraphy - Historical geology
ER  -