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 :
U1  - 551.7 
PY  - 1976///
CY  - New York
PB  - John Wiley
KW  - Geology, Strtegraphic
N1  - "A Wiley-Interscience publication"; Includes index; Bibliography: p. 111-187
ER  -