TY  - BOOK
AU  - KUMMEL,BERNHARD
TI  - HISTORY OF THE EARTH AN INTRODUCTION TO HISTORICAL GEOLOGY / 
U1  - 909 
PY  - 1961///.
CY  - SAN FRANCISCO : 
PB  - W.H FREEMAN AND COMPANY, 
KW  - HISTORY.
KW  - WORLD HISTORY.
KW  - GEOLOGY.
ER  -