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| Atomic Bomb (1) |
| Atomic bomb -- Germany -- History -- 20th century (1) |
| Deuterium oxide -- Norway -- History -- 20th century (1) |
| Heavy Water (1) |
| Vemork Hydroelectric Plant (1) |
| World War II (1) |
| World War, 1939-1945 -- Commando operations -- Norway (1) |
| World War, 1939-1945 -- Underground movements -- Norway (1) |