Columbia subject headings:
Seferis, George, 1900-1971. Correspondence.
Theotokas, Giōrgos, 1905-1966--Correspondence.
Harvard subject headings:
Seferis, George, 1900-1971--Correspondence.
Theotokas, Giörgos--Correspondence.
Princeton subject headings:
Seferis, George, 1900-1971. Correspondence.
Theotokas, Giörgos--Correspondence.