Whales, dolphins, and porpoises of the eastern North Pacific and adjacent Arctic waters: A guide to their identification

Leatherwood, S.; Reeves, R. R.; Perrin, W. F.; Evans, W. E.
NOAA Technical Report NMFS Circular 444 (1982)

This field guide is designed to permit observers to identify the cetaceans (whales, dolphins, and porpoises) they see in the waters of the eastern North Pacific, including the Gulf of…