Columbia subject headings:
Authors, French--20th century--Correspondence.
Cocteau, Jean, 1889-1963--Correspondence.
Duflo, Pierre--Correspondence.
Harvard subject headings:
Authors, French--20th century--Correspondence
Cocteau, Jean, 1889-1963--Correspondence.
Duflo, Pierre--Correspondence.
Duflo, Pierre.
Princeton subject headings:
Authors, French--20th century--Correspondence.
Cocteau, Jean, 1889-1963--Correspondence.
Duflo, Pierre--Correspondence.