 |
| |||
| حمأة الصرف الصحي | |||
| غرين ؛طمي | |||
| الطين ؛وحل | |||
| 淤泥: 13 phrases in 6 subjects |
| Agriculture | 2 |
| Environment | 3 |
| Geography | 1 |
| Soil science | 1 |
| Waste management | 1 |
| Water resources | 5 |
|
| |||
| حمأة الصرف الصحي | |||
| غرين ؛طمي | |||
| الطين ؛وحل | |||
| 淤泥: 13 phrases in 6 subjects |
| Agriculture | 2 |
| Environment | 3 |
| Geography | 1 |
| Soil science | 1 |
| Waste management | 1 |
| Water resources | 5 |