Columbia subject headings:
Halıdere (Turkey)
Kocaeli İli (Turkey)
Harvard subject headings:
Halıdere (Turkey)--History, Local.
Kocaeli İli (Turkey)
Kocaeli İli (Turkey)--History, Local.
Princeton subject headings:
Halıdere (Turkey)--History, Local.
Kocaeli İli (Turkey)--History, Local.