TY  - BOOK
AU  - Twenhofel, William Henry
AU  - Shrock, Robert Rakes
TI  - Principles of intervertebrate paleontology
AV  - QE 770 T84
PY  - 1953///
CY  - New York
PB  - MacGraw-Hill
KW  - Invertebrados fósiles
ER  -