TY  - BOOK
AU  - Kurten Bjorn
TI  - Age of mammals
U1  - K97, L11 
PY  - 1971///
CY  - London
PB  - Weidenfeld and Nicolson       
KW  -  Mammals
KW  - Zoology
N1  - Appendix 227-228p
ER  -