Columbia subject headings:
Germany--Social conditions.
Hoffmann, E. T. A. (Ernst Theodor Amadeus), 1776-1822. Sandmann.
Machine theory.
Mental illness--Germany--History.
Harvard subject headings:
Germany--Social conditions.
Hoffmann, E. T. A. (Ernst Theodor Amadeus), 1776-1822. Sandmann
Mental illness--Germany--History.
Robots
Princeton subject headings:
Germany--Social conditions.
Hoffmann, E. T. A. (Ernst Theodor Amadeus), 1776-1822. Der Sandmann.
Mental illness--Germany--History.