TY  - BOOK
AU  - Colbert, Edwin H.
TI  - Evolution of the vertebrates: a history of the backboned animals through time
SN  - 085226125X
U1  - 566 
PY  - 1989///
CY  - New Delhi
PB  - Wiley eastern
KW  - Botany
N1  - Includes index
ER  -