TY  - BOOK
AU  - Ojakangas,Richard W.
AU  - Darby,David G.
TI  - The earth, past & present
SN  - 0070476764 :
U1  - 550 
PY  - 1976///
CY  - New York
PB  - McGraw-Hill
KW  - Geology
KW  - Earth
N1  - Includes index
ER  -