Allegheny Ludlum Steel Corporation. (1957). Tool steel handbook. United States Steel Export Company.
Cita Chicago Style (17a ed.)Allegheny Ludlum Steel Corporation. Tool Steel Handbook. Pittsburgh: United States Steel Export Company, 1957.
Cita MLA (8a ed.)Allegheny Ludlum Steel Corporation. Tool Steel Handbook. United States Steel Export Company, 1957.
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