Valerie Rough ; David T. Richardson ; Steven K. Katona Related books A Field Guide to the Whales, Porpoises and Seals of the Gulf of Maine and Eastern Canada Scribner A Field Guide to the Whales, Porpoises and Seals of the Gulf of Maine and Eastern Canada: Cape Cod to Newfoundland Scribner Field Guide to Whales, Porpoises, and Seals from Cape Cod to Newfoundland Harpercollins • 1993