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APA Citation
Institution,, B. S. (2021). BS EN IEC 61139-2. Industrial networks. Single-drop digital communication interface.. London : British Standards Institution. http://access.bl.uk/ark:/81055/vdc_100113610677.0x000001
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Institution,, B. S. (2021). BS EN IEC 61139-2. Industrial networks. Single-drop digital communication interface.. London : British Standards Institution. http://access.bl.uk/ark:/81055/vdc_100113610677.0x000001