Columbia subject headings:
Bursa (Turkey)--History--20th century--Congresses.
Bursa (Turkey)--History--21st century--Congresses.
Harvard subject headings:
Bursa (Turkey)--History--20th century--Congresses.
Bursa (Turkey)--History--21st century--Congresses.
Princeton subject headings:
Bursa (Turkey)--History--20th century--Congresses.
Bursa (Turkey)--History--21st century--Congresses.