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BS 2000-57:1995

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BS 2043:1968

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BS 2782-5:METHOD 520A:1992

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BS 2782-5:METHOD 521A:1992

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BS 2782-7:METHOD 740C:1996

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BS 2808:1969

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BS 2881:1989

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BS 2A 204; 2A 206 […]:1963

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BS 2G 215-2:1989

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BS 2HR 650:2011

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