TY  - BOOK
AU  - Gignoux,Maurice
AU  - Woodford,Gwendolyn G.
TI  - Stratigraphic geology 
U1  - 551.7  
PY  - 1955///.
CY  - San Francisco : 
PB  - W. H. Freeman and Company, 
KW  -  Geology
KW  - Stratigraphic Geology
ER  -