TY  - BOOK
AU  - Colbert,Edwin H.
TI  - Evolution of the vertebrates: A history of the backboned animals thragh time 
SN  - 0471049662
AV  - QE841 C68 1980
PY  - 1979///
CY  - New York
PB  - Wiley
KW  - Vertebrados fósiles
KW  - Vertebrados
KW  - Evolución
N1  - "a wiley-interscience publication"
ER  -