Cite
MLA Citation
British Standards Institution,. BS EN IEC 60793-1-1. Optical fibres.. London : British Standards Institution, 2021. http://access.bl.uk/ark:/81055/vdc_100119709337.0x000001
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British Standards Institution,. BS EN IEC 60793-1-1. Optical fibres.. London : British Standards Institution, 2021. http://access.bl.uk/ark:/81055/vdc_100119709337.0x000001