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BS

PDF Standards BS 4395-3:1973

Specification for high strength friction grip bolts and associated nuts and washers for structural engineering-Higher grade bolts (waisted shank), nuts and general grade washers
standard by BSI Group, 10/31/1975

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BS

PDF Standards BS 4432-4:1980

Methods for determining optical properties of pulp, paper and board-Measurement of diffuse blue reflectance factor (ISO brightness) of pulps
standard by BSI Group, 03/31/1980

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