TY  - BOOK
AU  - Kummel,Bernhard
TI  - History of the earth: an introduction to historical geology 
T2  - Series of books in geology
SN  - 0716702495
U1  - 551.7 22
PY  - 1970///
CY  - San Francisc : 
PB  - W. H. Freeman
KW  - Historical geology
N1  - Includes bibliographies
ER  -