TY  - BOOK
AU  - Twenhofel,W.H.
AU  - Tyler S.A.
TI  - Methods of study of sediments 
U1  - 552.5 TWE T  
PY  - 1941///.
CY  - New York : 
PB  - McGraw-Hill Book Company, Inc., 
KW  - Sedimentary rocks
KW  - Rocks
N1  - Includes index
ER  -