Columbia subject headings:
Casinos--Turkey--Istanbul.
Gambling--Turkey--Istanbul.
Gangsters--Turkey--Istanbul.
Istanbul (Turkey)--Social life and customs.
Harvard subject headings:
Casinos--Turkey--Istanbul.
Gambling--Turkey--Istanbul.
Gangsters--Turkey--Istanbul.
Istanbul (Turkey)--Social life and customs
Princeton subject headings:
Casinos--Turkey--Istanbul.
Gambling--Turkey--Istanbul.
Gangsters--Turkey--Istanbul.
Istanbul (Turkey)--Social life and customs.