TY  - BOOK
AU  - Ojakangas Richard W
AU  -  Darby David G
TI  - Earth :  Past and present   
T2  - McGraw Hill Earth Science Paper Back Series
SN  - 0070476764
U1  - U211, L6 
PY  - 1976///
CY  - New York
PB  - McGraw Hill U S A     
KW  - Geomorphology
ER  -