TY  - BOOK
AU  - Harland W B and others
TI  - Geologic time scale
T2  - Cambridge Earth Science Seires
SN  - 0 521 24728 4
U1  - H5, M2 
PY  - 1982///
CY  - Cambridge
PB  - Cambridge University Press        
KW  - Geology
ER  -