Columbia subject headings:
Berne Convention for the Protection of Literary and Artistic Works--Revisions, 1928.
Copyright--United States.
Harvard subject headings:
Bern copyright convention (1886)--Revisions, 1928.
Copyright--United States.
Legislative hearings.
Princeton subject headings:
Bern copyright convention (1886)--Revisions, 1928.
Copyright--United States.