American Iron and Steel Institute. Directory of the iron and steel works of the United States and Canada. The Institute.
Citace podle Chicago (17th ed.)American Iron and Steel Institute. Directory of the Iron and Steel Works of the United States and Canada. New York, N.Y.: The Institute.
Citace podle MLA (8th ed.)American Iron and Steel Institute. Directory of the Iron and Steel Works of the United States and Canada. The Institute.
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