Columbia subject headings:
Grassi, Ernesto.
Humanism--History--20th century.
Philosophers--Germany--Biography.
Harvard subject headings:
Grassi, Ernesto
Humanism--History--20th century.
Philosophers--Germany--Biography
Princeton subject headings:
Grassi, Ernesto, 1900-1963.
Humanism.
Humanists--Germany--20th century--Biography.
Humanists--Italy--20th century--Biography.
Philosophers--Germany--20th century--Biography.
Philosophers--Italy--20th century--Biography.