Columbia subject headings:
Byzantine Empire--Politics and government--Sources--Congresses.
Petitions--Byzantine Empire--Congresses.
Harvard subject headings:
Byzantine Empire--Politics and government--Sources--Congresses.
Petitions--Byzantine Empire--Congresses.
Princeton subject headings:
Byzantine Empire--History--Sources--Congresses.
Byzantine Empire--Politics and government--Congresses.
Byzantine literature--History and criticism--Congresses.
Catalogs.
Justice, Administration of--Byzantine Empire--History--Congresses.
Manuscripts, Greek (Papyri)--Catalogs.
Petitions--Byzantine Empire--Congresses.