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Subjects
- Atomic bomb.1
- Children -- Health and hygiene -- United States.1
- Explosions.1
- Health education.1
- Hygiene.1
- Nuclear weapons.1
- Ordnance testing.1
- Physical education and training.1
- Physicists -- Michigan -- Ann Arbor.1
- Physics.1
- Public health -- United States.1
- Scientific equipment.1
- Tuberculosis.1
- World War, 1939-1945.1