TY  - BOOK
AU  - Colbert,Edwin H.
TI  - Evolution of the vertebrates: a history of the backboned animals through time 
PY  - 1955///
CY  - New York
PB  - John Wiley & Sons
KW  - Vertebrates, Fossil
KW  - Vertebrates
KW  - Evolution
KW  - Phylogeny
ER  -