TY  - BOOK
T1  - History of the earth;an introduction to historical geology.
DA  - c1961.
CY  - San Francisco,
AU  - Kummel, Bernhard,
CN  - QE501 .K79
CN  - QE501
PB  - W. H. Freeman,
PP  - San Francisco,
PY  - c1961.
ID  - 58900
KW  - Geology, Stratigraphic.
KW  - Paleontology.
TI  - History of the earth;an introduction to historical geology.
ER  -