Plastics piping systems for renovation of underground drainage and sewerage networks under pressure - Part 1: General (ISO/DIS 11297-1:2012); German version prEN ISO 11297-1:2012
Plastics piping systems for renovation of underground drainage and sewerage networks under pressure - Part 1: General (ISO 11297-1:2013); German version EN ISO 11297-1:2013— 23 стр.