TY  - BOOK
AU  - Ojakangas, Richard W.
AU  - Darby, David G.
TI  - The earth: :Past and present
T2  - Mc Graw-Hill earth science paper back series edited by Richard Ojakangas
U1  - 550 
PY  - 1976///
CY  - New York
PB  - Mc Graw Hills 
KW  - Earth science
KW  - Fossils and the rock
KW  - Earths internal processes
KW  - Origin of oceans
ER  -