Columbia subject headings:
Beard, George M. (George Miller), 1839-1883.
Neurasthenia--History--19th century.
Neurasthenia--History--20th century.
Harvard subject headings:
Beard, George M. (George Miller), 1839-1883
Beard, George M. (George Miller), 1839-1883.
Neurasthenia--History--19th century.
Neurasthenia--History--20th century.
Princeton subject headings:
Beard, George M. (George Miller), 1839-1883.
Neurasthenia--History--19th century.
Neurasthenia--History--20th century.