TY  - BOOK
AU  - Jefferson, Thomas A.
TI  - Marine mammals of the world : a comprehensive guide to their identification / 
SN  - 9780123838537
U1  - Circ. 599.5 J46m 2008 First edition
PY  - 2008///
CY  - UK : 
PB  - Academic Press, 
KW  - 1. Marine mammals.
KW  - 2. Marine mammals-Identification
N1  - Includes bibliographical references and index
ER  -