TY  - BOOK
AU  - Shrock,Robert R.
TI  - Sequence in layered rocks : a study of features and structures useful for determining top and bottom or order of succession in bedded and tabular rock bodies
U1  - 552.5 SHR  
PY  - 1948///.
CY  - New York : 
PB  - McGraw-Hill Book Company, Inc., 
KW  - Geology, Structural
KW  - Geology--Fieldwork
KW  - Rocks
N1  - Includes index.
ER  -