TY  - BOOK
AU  - Raup,David M.
AU  - Stanley, Steven M. 
TI  - Principles of paleontology / 
U1  - 560 RAU S 22nd ed. 
PY  - 1985///.
CY  - Delhi : 
PB  - CBS Publishers and Distributors, 
KW  - Paleontology
ER  -