William T. Hogan. (1972). The 1970s: Critical years for steel. Toronto: Lexington.
Trích dẫn kiểu ChicagoWilliam T. Hogan. The 1970s: Critical Years for Steel. Toronto: Lexington, 1972.
Deismireacht MLAWilliam T. Hogan. The 1970s: Critical Years for Steel. Toronto: Lexington, 1972.
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