NS 3420-C3-2007 Specification texts for building,construction and installations Part C3:Removal of hazardous substances,disassembly,demolition and making openings
2008NS 3420-C-2008 Specification texts for building,construction and installations Part C:Preliminary works
2007NS 3420-C3-2007 Specification texts for building,construction and installations Part C3:Removal of hazardous substances,disassembly,demolition and making openings
NS 3420-C3-2007 Specification texts for building,construction and installations Part C3:Removal of hazardous substances,disassembly,demolition and making openings was changed to NS 3420-C-2008 Specification texts for building,construction and installations Part C:Preliminary works.