Columbia subject headings:
Harvard subject headings:
2. Gymnasio Thessalonikēs.
Education, Secondary--Greece--Thessalonikē--History--20th century.
Education, Secondary--Greece--Thessalonikē--History--21st century.
High schools--Greece--Thessalonikē.
Princeton subject headings:
2. Gymnasio Thessalonikēs.
Education, Secondary--Greece--Thessalonikē--History--20th century.
Education, Secondary--Greece--Thessalonikē--History--21st century.
High schools--Greece--Thessalonikē.