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PDF Standards BS 4979-1:1973

Methods for testing and rating air control devices for air distribution systems-Aerodynamic testing of constant flow rate assemblies without a heat exchanger
standard by BSI Group, 08/29/1975

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PDF Standards BS 2G 210:1991

Specification for PTFE insulated equipment wires and cables, single and multi-core, with silver plated copper conductors (190°C) or nickel plated copper conductors (260°C)
standard by BSI Group, 05/31/1991

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