Columbia subject headings:
Binswanger, Ludwig, 1881-1966--Correspondence.
Häberlin, Paul, 1878-1960--Correspondence.
Psychology and philosophy--Switzerland.
Harvard subject headings:
Princeton subject headings:
Binswanger, Ludwig, 1881-1966--Correspondence.
Häberlin, Paul, 1878-1960--Correspondence.
Psychology and philosophy--Switzerland.