Class 42.12
| SNI code | Activity |
|---|---|
| F | Construction |
| 42 | Civil engineering |
| 42.1 | Construction of roads and railways |
| 42.12 | Construction of railways and underground railways |
| 42.120 | Construction of railways and underground railways |
| SNI code | Activity |
|---|---|
| F | Construction |
| 42 | Civil engineering |
| 42.1 | Construction of roads and railways |
| 42.12 | Construction of railways and underground railways |
| 42.120 | Construction of railways and underground railways |