TY  - BOOK
AU  - Grotzinger, John ,
AU  - Jordan, Thomas H.,
TI  - Understanding earth, 7th ed
SN  - 9781464138744
U1  - 550 GRO 
PY  - 2014///
CY  - New York
PB  - W. H Freeman and Company
KW  - Earth sciences
KW  - Geology
KW  - Rocks
KW  - Earth materials
N1  - Includes bibliographical references and index
ER  -