TY  - BOOK
AU  - Calder,Nigel
TI  - Restless earth: a report on the new geology
PY  - 1972///
CY  - London - INGL
PB  - British Broadcasting
KW  - Tierra
KW  - planeta
KW  - geologia
KW  - tierra
KW  - corteza terrestre
KW  - Geologia
ER  -