TY  - BOOK
AU  - Young,J.Z.
TI  - The life of vertebrates
SN  - 5455
AV  - QL605 .Y68
U1  - 596/YOU 
PY  - 1950///
CY  - Oxford
PB  - Clarendon Press
KW  - Vertebrates
KW  - Vertebrates, Fossil
N1  - Bibliography: p. [741]-746
ER  -