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Subjects
- Ultraviolet Therapy1
- Unconscious (Psychology)2
- Unconscious, Psychology2
- United Kingdom2
- United States84
- United States -- ethnology1
- United States Government Agencies -- history1
- United States. Army1
- United States. Army. American Expeditionary Forces.19
- United States. Army. Base Hospital No. 10.1
- United States. Army. Base Hospital No. 19.1
- United States. Army. Base Hospital No. 20.1
- United States. Army. Base Hospital No. 34.1
- United States. Army. Base Hospital No. 36.1
- United States. Army. Base Hospital No. 50.1
- United States. Army. Base Hospital No. 68.1
- United States. Army. Base Hospital No. 9.1
- United States. Army. Evacuation Hospital, 15th.1
- United States. Army. Medical Corps.1
- United States. Army. Medical Department.19