TY  - BOOK
AU  - Pettijohn F T
TI  - Sedimentary rocks
T2  - Harper's groscience series
U1  - H23, J7;7 
PY  - 1957///
CY  - New Delhi    
PB  -  Oxford & IBH Pub     
KW  -  Petrology
KW  - Geology
ER  -