Cite
MLA Citation
British Standards Institution,. BS 669-1. Flexible hoses, end fittings and sockets for gas burning appliances.. London : British Standards Institution, 2021. http://access.bl.uk/ark:/81055/vdc_100127877431.0x000001
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British Standards Institution,. BS 669-1. Flexible hoses, end fittings and sockets for gas burning appliances.. London : British Standards Institution, 2021. http://access.bl.uk/ark:/81055/vdc_100127877431.0x000001