| 970 - 979 : STRUCTURES IN EXTERNAL WORKS | ||
|---|---|---|
| 970 | Structures in External Works (Grouped) | |
| 971 | Building outlines | |
| 972 | Underground building outlines | |
| 973 | Pylons/Antenna/Masts | |
| 974 | ||
| 975 | Utility connection points | |
| 976 | ||
| 977 | ||
| 978 | Noise barriers | |
| 979 | Parts and accessories | |