TY  - BOOK
TI  - HOLT EARTH SCIENCE: TEACHERS EDITION
SN  - 0030019079
U1  - 550 
PY  - 1982///
CY  - [s.l.]
PB  - HOLT,RINEHART AND WINSTON
KW  - CIENCIA DE LA TIERRA
KW  - GEOFISICA
ER  -