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91.010 | Construction industry
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91.010.01 | Construction industry in general
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91.010.10 | Legal aspects
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91.010.20 | Contractual aspects
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91.010.30 | Technical aspects
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91.010.99 | Other aspects
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91.020 | Physical planning. Town planning
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91.040.01 | Buildings in general
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91.040.10 | Public buildings
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91.040.20 | Buildings for commerce and industry
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91.040.30 | Residential buildings
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91.040.99 | Other buildings
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91.060 | Elements of buildings
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91.060.01 | Elements of buildings in general
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91.060.40 | Chimneys, shafts, ducts
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91.060.50 | Doors and windows
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91.060.99 | Other elements of buildings
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91.080 | Structures of buildings
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91.080.01 | Structures of buildings in general
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91.080.10 | Metal structures
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91.080.13 | Steel structures
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91.080.17 | Aluminium structures
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91.080.99 | Other structures
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91.090 | External structures
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91.100 | Construction materials
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91.100.23 | Ceramic tiles
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91.100.25 | Terracotta building products
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91.100.40 | Products in fibre-reinforced cement
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91.100.60 | Thermal and sound insulating materials
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91.100.99 | Other construction materials
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91.120 | Protection of and in buildings
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91.120.01 | Protection of and in buildings in general
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91.120.10 | Thermal insulation of buildings
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91.120.25 | Seismic and vibration protection
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91.120.40 | Lightning protection
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91.120.99 | Other standards related to protection of and in buildings
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91.140 | Installations in buildings
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91.140.01 | Installations in buildings in general
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91.140.40 | Gas supply systems
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91.140.50 | Electricity supply systems
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91.140.90 | Lifts. Escalators
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91.140.99 | Other installations in buildings
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91.160.01 | Lighting in general
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91.160.10 | Interior lighting
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91.160.20 | Exterior building lighting
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91.180 | Interior finishing
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91.190 | Building accessories
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91.200 | Construction technology
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