Natural gas distribution and water, sewage and other systems IBSP
221A - Natural gas distribution and water, sewage and other systems
| Code | Title |
|---|---|
| 221210Natural gas distribution | Natural gas distributionUS |
| 221310Water supply and irrigation systems | Water supply and irrigation systemsUS |
| 221320Sewage treatment facilities | Sewage treatment facilitiesUS |
| 221330Steam and air-conditioning supply | Steam and air-conditioning supplyUS |
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