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Subject
- History5
- Mental health3
- Psychological aspects3
- Health care reform2
- History, 19th Century2
- History, 20th Century2
- National socialism2
- Public health2
- World War, 1939-19452
- Air1
- Air Pollutants1
- Air Pollution1
- Air quality management1
- Anxiety1
- Cancer1
- Coal1
- Dachau (Concentration camp)1
- Electrification1
- Electroconvulsive therapy1
- Electrotherapeutics1