Columbia subject headings:
Harvard subject headings:
Authors, French--20th century--Correspondence
Green, Julien, 1900-1998--Correspondence.
Maritain, Jacques, 1882-1973--Correspondence.
Philosophers--France--Correspondence
Princeton subject headings:
Authors, French--20th century--Correspondence.
Green, Julien, 1900---Correspondence.
Maritain, Jacques, 1882-1973.
Philosophers--France--Correspondence.