 |
| |||
| universal sewerage system | |||
| water-borne sewerage; conventional sewage; waterborne sewer | |||
| one-pipe system | |||
| combined sewerage system | |||
| общесплавная система канализации: 6 phrases, 4 sujets |
| Approvisionnement en eau | 1 |
| Construction | 1 |
| Écologie | 3 |
| Makarov | 1 |
|
| |||
| universal sewerage system | |||
| water-borne sewerage; conventional sewage; waterborne sewer | |||
| one-pipe system | |||
| combined sewerage system | |||
| общесплавная система канализации: 6 phrases, 4 sujets |
| Approvisionnement en eau | 1 |
| Construction | 1 |
| Écologie | 3 |
| Makarov | 1 |