Columbia subject headings:
Harvard subject headings:
Alsace (France)--Intellectual life--20th century.
Alsace (France)--Politics and government--20th century.
Barthel, Ernst, 1890-1953.
Mathematicians--France--Biography
Philosophers--France--Biography
Universities and colleges--France--History--20th century.
Princeton subject headings:
Alsace (France)--Politics and government--20th century.
Alsace-Lorraine (Germany)--Intellectual life.
Alsace-Lorraine (Germany)--Politics and government--20th century.
Barthel, Ernst, 1890-1953.
Mathematicians--Biography.
Philosophers--Biography.
Universities and colleges--Germany--History--20th century.