TY  - BOOK
AU  - Barnes,J.W.
ED  - Open University
TI  - Basic geological mapping
T2  - Geological society of london handbook series
SN  - 0470216875
AV  - QE36 B36 1991
PY  - 1991///
CY  - New York
PB  - Open University Press, Halsted
KW  - Geología
KW  - Mapas
ER  -