 |
| |||
| humus formation (В. Бузаков) | |||
| humusification | |||
| humification | |||
| образование гумуса: 2 phrases in 2 subjects |
| Geology | 1 |
| Natural resourses and wildlife conservation | 1 |
|
| |||
| humus formation (В. Бузаков) | |||
| humusification | |||
| humification | |||
| образование гумуса: 2 phrases in 2 subjects |
| Geology | 1 |
| Natural resourses and wildlife conservation | 1 |