TY  - BOOK
AU  - British Broadcasting Corporation.
AU  - Attenborough, David.
TI  - The rise of the mammals
PY  - 1981///
CY  - British Broadcasting Corporation,
KW  - Mammals
KW  - Evolution
KW  - Life
KW  - Origin
KW  - Marsupialia
N1  - How and why the most entertaining reptiles became mammals is shown in this programme from the "Life on earth" series.  The development of marsupials and placental mammals is traced
ER  -