TY  - BOOK
AU  - Colbert Edwin H
TI  - Evolution of the vertebrates: a history of the backboned animals through time
U1  - 596.138 
PY  - 1976///
CY  - New Delhi
PB  - Wiley Eastern
KW  - Evolution
KW  - Phylogeny
KW  - Vertebrates
KW  - Vertebrates fossil
ER  -