TY  - BOOK
AU  - Grotzinger,John P.
AU  - Jordan,Thomas H.
TI  - Understanding Earth / 
SN  - 9781429240031
U1  - 551 
PY  - 1989///.
CY  - New York : 
PB  - W.H. Freeman,  
KW  - Earth sciences--Textbooks. ;  Earth ;  Physical geology
N1  - Includes bibliographical references and index
ER  -