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PDF Standards BS 3456-202.19:1990

Specification for safety of household and similar electrical appliances. Particular requirements-Battery-powered shavers, hair clippers and similar appliances and their charging and battery assemblies
standard by BSI Group, 01/31/1991

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PDF Standards BS 3680-9A:1971

Methods of measurement of liquid flow in open channels. Water level instruments-Specification for the installation and performance of pressure actuated liquid level measuring equipment
standard by BSI Group, 07/30/1971

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