TY  - BOOK
AU  - Ekman, Sven
TI  - Zoogeography of the sea
U1  - 591.9 
PY  - 1953///
CY  - London
PB  - Sidgwick & Jackson
KW  - Fauna of north pacific
KW  - Fauna of north Atlantic
KW  - Bipolarity
ER  -