TY  - BOOK
AU  - Harbaugh,John Warvelle
TI  - Stratigraphy and the geologic time scale
T2  - Brown foundations of earth science series 
SN  - 0697050114 
PY  - 1974///]
CY  - Dubuque, Iowa
PB  - W.C. Brown Co.
KW  - Geology, Stratigraphic.
KW  - Geological time.
N1  - Includes bibliographies.
ER  -