Cite
HARVARD Citation
Institution,, B. (2020) BS ISO 13268. Thermoplastics piping systems for non-pressure underground drainage and sewerage. Thermoplastics shafts or risers for inspection chambers and manholes. Determination of ring stiffness.. [Online]. London : British Standards Institution. Available from: http://access.bl.uk/ark:/81055/vdc_100105409522.0x000001