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PDF Standards BS 4505-5:1971

Digital data transmission assignment of connector pin numbers for interchange circuits between data terminal equipment and data communication equipment
standard by BSI Group, 01/31/1977

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BS

PDF Standards BS 4746:1971

Recommendations for the location and direction of movement of controls of pedestrian-operated tractors, agricultural and horticultural machines
standard by BSI Group, 05/25/1971

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