Columbia subject headings:
Harvard subject headings:
Bergson, Henri, 1859-1941--Correspondence.
Léon, Xavier, 1868-1935--Correspondence.
Philosophers--France--Correspondence
Princeton subject headings:
Bergson, Henri, 1859-1941--Correspondence.
Bulletin de la Société française de philosophie.
Léon, Xavier, 1868-1935--Correspondence.
Philosophers--France--Correspondence.
Revue de métaphysique et de morale (Paris, France : 1893)