 |
| |||
| cut-over-land tillage; slash-and-burn system of agriculture | |||
| slash-and-burn system of agriculture | |||
| подсечная система земледелия: 4 do fraz, 2 tematyki |
| Ekologia | 1 |
| Rolnictwo | 3 |
|
| |||
| cut-over-land tillage; slash-and-burn system of agriculture | |||
| slash-and-burn system of agriculture | |||
| подсечная система земледелия: 4 do fraz, 2 tematyki |
| Ekologia | 1 |
| Rolnictwo | 3 |