Title: Hōshasen o abita X-nengo
Subjects: Environmental aspects, Testing, Genshi bakudan-Higai, Radiation injuries, Hydrogen bomb, Hōshasen shōgai, Daigo fukuryūmaru jiken, Māsharu shotō, History, Operation Castle, Marshall Islands, 1954
Places: Japan, Bikini Atoll, Marshall Islands
Time periods: 20th century