TY  - BOOK
AU  - Gradstein, Felix M.  
AU  - Ogg, James G. Smith, A. Gilbert 
TI  - A geologic time scale 2004
SN  - 0-521-78673-8
PY  - 2004///
CY  - Cambridge
PB  - Cambridge University Press
KW  - BiostratigraphyGeologic Time-scaleGeochronologyGeologic PeriodsStratigraphyTime Scale
ER  -