Cite
HARVARD Citation
Institution,, B. (2021) BS EN 17670-1. Plastics piping systems for non-pressure underground conveyance and storage of non-potable water. Manholes, inspection chambers and road gullies for storm water systems made of unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE).. [Online]. London : British Standards Institution. Available from: http://access.bl.uk/ark:/81055/vdc_100120948544.0x000001