TY  - BOOK
AU  - Harland, W B 
AU  - Cox, A V
TI  - Geologic time scale
T2  -  Cambridge earth science series
SN  - 9780521247283
PY  - 1987///
CY  - Cambridge: 
PB  - Cambridge University Press,  
KW  - Geology
KW  - Allgemeine Evolution
ER  -