Columbia subject headings:
Architecture--Turkey--Bolu.
Mosques--Turkey--Bolu.
Public baths--Turkey--Bolu.
Yıldırım Bayezid Külliyesi (Bolu, Turkey)
İmaret Camii (Bolu, Turkey)
Harvard subject headings:
Architecture, Ottoman--Turkey--Bolu.
Bolu (Turkey)--Buildings, structures, etc.
Mosques--Turkey--Bolu.
Yıldırım Bayezid Külliyesi (Bolu, Turkey)
Princeton subject headings: