Columbia subject headings:
Boss, Medard, 1903-1990--Correspondence.
Heidegger, Martin, 1889-1976--Correspondence.
Ontology.
Philosophers--Germany (West)--Correspondence.
Psychiatry--Philosophy.
Time.
Harvard subject headings:
Boss, Medard, 1903---Correspondence.
Boss, Medard, 1903-1990--Correspondence.
Heidegger, Martin, 1889-1976--Correspondence.
Ontology.
Philosophers--Germany--Correspondence
Psychiatrists--Switzerland--Correspondence.
Psychiatry--Philosophy
Time.
Princeton subject headings:
Boss, Medard, 1903-1990--Correspondence.
Heidegger, Martin, 1889-1976--Correspondence.
Philosophy.