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BS

BS 1432:1970

Specification for copper for electrical purposes. Strip with drawn or rolled edges
standard by BSI Group, 11/28/1980

BS

BS 1428-A5:1957

Microchemical apparatus. Combustion trains for the determination of elements. Specification for rapid method combustion tubes (Belcher and Ingram type)
standard by BSI Group, 05/03/1957