Columbia subject headings:
Harvard subject headings:
Aegean Islands (Greece and Turkey)--History--20th century--Sources.
Crete (Greece)--History--Occupation, 1941-1945--Sources.
Postal service--Aegean Islands (Greece and Turkey)--History--20th century.
Postal service--Greece--Crete--History--20th century.
World War, 1939-1945--Aegean Islands (Greece and Turkey)--Sources.
World War, 1939-1945--Greece--Crete--Sources.
Princeton subject headings:
Aegean Islands (Greece and Turkey)--History--20th century--Sources.
Crete (Greece)--History--Occupation, 1941-1945--Sources.
Postal service--Aegean Islands (Greece and Turkey)--History--20th century.
Postal service--Greece--Crete--History--20th century.
World War, 1939-1945--Aegean Islands (Greece and Turkey)--Sources.
World War, 1939-1945--Greece--Crete--Sources.