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BS

PDF Standards BS 4109:1970

Specification for copper for electrical purposes. Wire for general electrical purposes and for insulated cables and flexible cords
standard by BSI Group, 06/25/1970

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BS

PDF Standards BS 4196-3:1981

Sound power levels of noise sources-Engineering methods for determination of sound power levels for sources in special reverberation test rooms
standard by BSI Group, 01/30/1981

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