TY  - BOOK
AU  - Hedberg,Hollis D.
ED  - International Union of Geological Sciences. International Subcommission on Stratigraphic Classification.
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  - 'A Wiley-Interscience publication.'; Bibliography: p. 111-187; Includes index
ER  -