Activities relating to drinking water and wastewater services. Guidelines for the management of wastewater utilities and for the assessment of wastewater services— 72 стр.
Activities relating to drinking water and wastewater services. Guidelines for the management of drinking water utilities and for the assessment of drinking water services— 68 стр.
Plastics piping systems for pressure and non-pressure water supply -- Glass-reinforced thermosetting plastics (GRP) systems based on unsaturated polyester (UP) resin— 64 стр.
Plastics piping systems for pressure and non-pressure drainage and sewerage -- Glass-reinforced thermosetting plastics (GRP) systems based on unsaturated polyester (UP) resin -- Amendment 1— 10 стр.
Plastics piping systems for drainage and sewerage without pressure. Non-circular pipes and joints made of glass-reinforced thermosetting plastics (GRP) based on unsaturated polyester resins (UP). Dimensions, requirements and tests— 34 стр.
Plastics piping systems for pressure and non-pressure water supply, irrigation, drainage or sewerage. Glass-reinforced thermosetting plastics (GRP) systems based on unsaturated polyester (UP) resin. Pipes with flexible joints intended to be installed usin— 58 стр.
Plastics -- Symbols and abbreviated terms -- Part 1: Basic polymers and their special characteristics -- Amendment 1: New symbol ST for syndiotactic— 6 стр.