Columbia subject headings:
Harvard subject headings:
Authors, German--20th century--Psychological testing.
Hesse, Hermann, 1877-1962
Hesse, Hermann, 1877-1962--Psychology.
Lang, Josef Bernhard, 1881-1945.
Psychoanalysis--Switzerland--History--20th century.
Princeton subject headings:
Hesse, Hermann, 1877-1962.
Lang, Josef Bernhard, 1881-1945.