TY  - BOOK
AU  - Grotzinger, John
AU  - ...[et al.]
TI  - Understanding earth
SN  - 0-7167-6682-5
U1  - 55 
PY  - 2007///
CY  - New York
PB  - W.H. Freeman and Company
KW  - Earth science
KW  - Geology
KW  - Geosystems
ER  -