TY  - BOOK
AU  - Bass, Karen.
AU  - Leith, Brian.
TI  - Nature's great events
SN  - 978-1-84533-4567
U1  - GR 508 N219 2009 
PY  - 2009///
CY  - London
PB  - Octopus Pub. Group
KW  - Natural history
KW  - Animal migration
KW  - Biological rhytyms
KW  - Animal population
KW  - Animal behavior
N1  - Includes index
ER  -