TY  - BOOK
T1  - History of the earth;an introduction to historical geology.
DA  - [1970]
CY  - San Francisco,
AU  - Kummel, Bernhard,
ET  - 2d ed.
CN  - QE651
CN  - QE651
PB  - W. H. Freeman
PP  - San Francisco,
PY  - [1970]
ID  - 54128
KW  - Historical geology.
SN  - 716702495
TI  - History of the earth;an introduction to historical geology.
ER  -