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Timber Research and Development Association
view article (1.0)Timber Building Elements of Proven Fire Resistance Doors: D11 and D12.Timber Research and Development Assoc., Buckinghamshire, England['TRADA Wood Info. Sheet D11', 'TRADA Wood Info. Sheet D12', 'Section 1']TRADA Wood Info. Sheet D11; TRADA Wood Info. Sheet D12; Section 1
October 1991
4 p.