TY  - BOOK
AU  - Dunbar, Carl O.
AU  - Rodgers, John
TI  - Principles of stratigraphy
U1  - 551.7 
PY  - 1957///
CY  - New York
PB  - John Wiley & Sons
KW  - Geology, Stratigraphic
N1  - Includes Bibliographies
ER  -