Katona, S. K.; Rough, V.; Richardson, D. J. (1983). A field guide to the whales, porpoises and seals of the Gulf of Maine and eastern Canada, Cape Cod to Newfoundland. Charles Scribner's Sons. New York. 1-255.
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Katona, S. K.; Rough, V.; Richardson, D. J.
1983
A field guide to the whales, porpoises and seals of the Gulf of Maine and eastern Canada, Cape Cod to Newfoundland
