Phillip J. Clapham books & textbook
National Audubon Society Guide to Marine Mammals of the World (National Audubon Society Field Guides)
Brent S. Stewart Phillip J. Clapham James A. Powell Randall R. Reeves
Knopf /2002-04-02 Paperback / 528 Pages
isbn-10: 0375411410 / isbn-13: 9780375411410