TY  - BOOK
AU  - Levin,Harold L.
TI  - The Earth through time 
SN  - 0030051673
AV  - QE28 L21
PY  - 1996///
CY  - Fort Worth
PB  - Saunders College Pub.
KW  -  
KW  - Historical geology
N1  - Includes bibliographical references and index
ER  -