Columbia subject headings:
Harvard subject headings:
Drinking water--Turkey--Kocaeli İli--History.
Fountains--Turkey--Kocaeli İli--History.
Kocaeli İli (Turkey)--Description and travel.
Water resources development--Turkey--Kocaeli İli--History.
Water-supply--Turkey--Kocaeli--History.
Princeton subject headings:
Drinking water--Turkey--Kocaeli İli--History.
Fountains--Turkey--Kocaeli İli--History.
Kocaeli İli (Turkey)--Description and travel.
Water resources development--Turkey--Kocaeli İli--History.
Water-supply--Turkey--Kocaeli--History.