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BS SP 142-143:1973+A3:2013

Specification for solid rivets with 100 degrees countersunk truncated radiused head made from BS L 86 (SP 142) and BS L 37 (SP 143) materials
standard by BSI Group, 11/30/1973

BS PD ISO/TR 18945:2018

Imaging materials. Pictorial colour reflection prints. Comparison of image degradation observed between ISO 18930 accelerated weathering test method and outdoor exposure
standard by BSI Group, 10/25/2018