Cite
HARVARD Citation
Institution,, B. (2022) BS EN 1401-1 AMD 1. Plastics piping systems for non-pressure underground drainage and sewerage. Unplasticized poly(vinyl chloride) (PVC-U).. [Online]. London : British Standards Institution. Available from: http://access.bl.uk/ark:/81055/vdc_100160974497.0x000001