TY  - BOOK
AU  - Jefferson,Thomas A.
AU  - Webber,Marc A.
AU  - Pitman,Robert L.
TI  - Marine mammals of the world: a comprehensive guide to their identification 
SN  - 9780123838537
PY  - 2008///
CY  - Amsterdam
PB  - Elsevier/Academic Press
KW  - Marine mammals
KW  - Identification
ER  -