TY  - BOOK
AU  - Jefferson, Thomas A.
AU  - Webber, Marc A.
TI  - Marine mammals of the world: a comprehensive guide to their identification
SN  - 9780123838537
PY  - 2008///
CY  - Amsterdam
PB  - Elsevier
KW  - Marine mammals- guides
KW  - Cetacea
KW  - Sirenia
ER  -