| |||
| 管路网络 | |||
| 管网 | |||
| 管道网; 环状管网 | |||
|
pipeline network : 11 do fraz, 4 tematyki |
| Chiny | 2 |
| Geodezja | 1 |
| Ropa / ropa naftowa | 7 |
| Technika i technologia | 1 |
| |||
| 管路网络 | |||
| 管网 | |||
| 管道网; 环状管网 | |||
|
pipeline network : 11 do fraz, 4 tematyki |
| Chiny | 2 |
| Geodezja | 1 |
| Ropa / ropa naftowa | 7 |
| Technika i technologia | 1 |