TY  - BOOK
AU  - Levin,Harold L.
TI  - The earth through time
T2  - Saunders golden sunburst series
SN  - 0030051673
AV  - QE28.3 L47 1996
PY  - 1996///]
CY  - Forth Worth
PB  - Saunders College
KW  - Geología
KW  - Historia
ER  -