TY  - BOOK
AU  - Raup D M
AU  -  Stanley S M
TI  - Principles of paleontology
U1  - H6, L11;M5 
PY  - 1978///
CY  - Delhi
PB  - CBS         
KW  -  Paleontology
KW  - Geology
N1  - Bibliography 449-68p
ER  -