Question: What 1974 Daniel Cohen book mentions the Dragon's Triangle?
Sentence (from "Devil's Sea"): The size and area varies with the report (the only reports stem from the 1950s), with various reports placing it 110 km from an unspecified part of Japan's east coast, 480 km from the coast, and even near Iwo Jima, 1200 km from the coast.
Relevant evidence: No