(1953). Truscon open OT truss steel joists. Truscon Steel Division.
Tohutoru Kātū Chicago (17th ed.)Truscon Open OT Truss Steel Joists. Youngstown: Truscon Steel Division, 1953.
Tohutoro MLA (9th ed.)Truscon Open OT Truss Steel Joists. Truscon Steel Division, 1953.
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