TY  - BOOK
AU  - Colbert, Edwin H.
TI  - Evolution of the vertebrates : History of the backboned animals through time
U1  - 596 COL 
PY  - 1955///.
CY  - New York : 
PB  - John Wiley, 
KW  - Vertebrates, Evolution
N1  - Index
ER  -