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BS 1139-2:1982

Metal scaffolding-Specification for couplers and fittings for use in tubular scaffolding
standard by BSI Group, 08/28/1987

BS 1902-3-3.14:1987

Methods of testing refractory materials. General and textural properties-Determination of hydration tendency (methods 1902-314)
standard by BSI Group, 10/30/1987