Item: 422123 - Construction works for irrigation systems (canals), water mains and lines, water treatment plants, sewage disposal plants and pumping stations
Item's explanatory note:Vysvětlivka k položce:
This subcategory excludes: - construction works on pipelines and on water and sewer mains, see 42.21.21 (long-distance) and 42.21.22 (local), respectively