TY  - BOOK
AU  - Hedberg,Hollis Dow
ED  - International Union of Geological Sciences.
TI  - International stratigraphic guide: a guide to stratigraphic classification, terminology and procedure
SN  - 0471367435
PY  - 1976///
CY  - New York
PB  - Wiley
KW  - Geology, Stratigraphic
N1  - Includes index; Closed
ER  -