Columbia subject headings:
Seferis, George, 1900-1971--Concordances.
Seferis, George, 1900-1971--Language--Glossaries, etc.
Harvard subject headings:
Seferis, George, 1900-1971. Poiēmata.--Concordances.
Princeton subject headings:
Seferis, George, 1900-1971--Concordances.