Cite
HARVARD Citation
Institution,, B. (2021) BS EN 17670-2. 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 polyvinyl chloride (PVC-U), polypropylene (PP) and polyethylene (PE).. [Online]. London : British Standards Institution. Available from: http://access.bl.uk/ark:/81055/vdc_100120948547.0x000001