Columbia subject headings:
Water use--Turkey--İzmit--History.
Water--Turkey--İzmit--Distribution--History.
Water-supply--Turkey--İzmit--History.
Harvard subject headings:
Aqueducts--Turkey--İzmit.
İzmit (Turkey)--Antiquities.
İzmit (Turkey)--Buildings, structures, etc.
Paşasuyu (İzmit, Turkey)--Antiquities.
Paşasuyu (İzmiti, Turkey)--Buildings, structures, etc.
Water use--Turkey--İzmit--History.
Water-supply--Turkey--İzmit--History.
Princeton subject headings: