Columbia subject headings:
Ereğli Demir-Çelik.
Industrial management--Turkey.
Iron industry and trade--Turkey--Ereğli (Zonguldak İli)
Steel industry and trade--Turkey--Ereğli (Zonguldak İli)
Harvard subject headings:
Industries--Turkey
Industries--Turkey--Ereğli (Zonguldak İli).
Iron industry and trade--Turkey.
Steel industry and trade--Turkey.
Princeton subject headings:
Ereğli Demir-Çelik (Firm)
Industrial management--Turkey.
Iron industry and trade--Turkey--Ereğli (Zonguldak İli).
Steel industry and trade--Turkey--Ereğli (Zonguldak İli).