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PDF Standards BS 2000-272:1987

Methods of test for petroleum and its products-Determination of mercaptan sulphur and hydrogen sulphide content of liquefied petroleum gases by electrometric titration
standard by BSI Group, 02/27/1987

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PDF Standards BS 1473:1955

Specification for wrought aluminium and aluminium alloys for general engineering purposes – rivet, bolt & screw stock for forging.
standard by BSI Group, 12/22/1955

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