TY  - BOOK
AU  - Barnes,Charles W.
TI  - Earth, time, and life: an introduction to physical and historical geology 
SN  - 0-471-82598-0
AV  - QE28 B37 1988
PY  - 1988///
CY  - New York
PB  - John Wiley
N1  - Incluye bibliografia
ER  -