TY  - BOOK
AU  - Kummel,Bernhard
TI  - History of the earth: an introduction to historical geology
T2  - A Series of books in geology
SN  - 0716702495
AV  - QE651.K77 1970 
PY  - 1970///]
CY  - San Francisco
PB  - W. H. Freeman
KW  - Historical geology
ER  -