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Gas distribution systems. With Amendments No. 1, 2, 3, 4
Document status: Active
Low-voltage electric installations for buildings and structures. Design rules for explosive hazardous areas. With Amendment No. 1
Document status: Active
Buildings and structures. Operating rules. General provisions. With Amendments No. 1, 2
Document status: Active
Code of regulations on cost estimation of construction during elaboration of priliminary and detail design
Document status: Replaced
Protective structures of civil defense in underground mine workings
Document status: Active