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PDF Standards BS 142-1.4.4:1993

Electrical protection relays. Information and requirements for all protection relays. Specification for electrical disturbance tests-Fast transient disturbance test
standard by BSI Group, 02/15/1993

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BS

PDF Standards BS 1472:1951

Specification for wrought aluminium and aluminium alloys for general engineering purposes – forgings (including hot pressing, hot stampings, drop stampings and drop forgings)
standard by BSI Group, 09/11/1951

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