Columbia subject headings:
Harvard subject headings:
Skin--Diseases--History--18th century--Case studies.
Skin--Diseases--History--19th century--Case studies.
Skin--Diseases--History--20th century--Case studies.
Skin--Diseases--Treatment--History--18th century--Case studies.
Skin--Diseases--Treatment--History--19th century--Case studies.
Skin--Diseases--Treatment--History--20th century--Case studies.
Princeton subject headings:
Case studies.
Skin--Diseases--History--18th century--Case studies.
Skin--Diseases--History--19th century--Case studies.
Skin--Diseases--History--20th century--Case studies.
Skin--Diseases--Treatment--History--18th century--Case studies.
Skin--Diseases--Treatment--History--19th century--Case studies.
Skin--Diseases--Treatment--History--20th century--Case studies.