soil properties vlastnosti pôdy 11 [vynechat] pôda 8 [vynechat] soil 6 [vynechat] damage to soils 5 [vynechat] pedology 4 [vynechat] pedológia 4 [vynechat] poškodenie pôdy 4 [vynechat] humus 3 [vynechat] soil fertility 3 [vynechat] agricultural soils 2 [vynechat] ekológia pôdy 2 [vynechat] environmental protection 2 [vynechat] ochrana pôdy 2 [vynechat] ochrana životného prostredia 2 [vynechat] poľnohospodárska pôda 2 [vynechat] pôdna biológia 2 [vynechat] pôdne organizmy 2 [vynechat] soil biology 2 [vynechat] soil classification 2 [vynechat] soil ecology 2 [vynechat] soil organisms 2 [vynechat] soil pollution 2 [vynechat] soil protection 2 [vynechat] soil use 2 [vynechat] soils 2 [vynechat] systematická pedológia 2 [vynechat] využitie pôdy 2 [vynechat] znečistenie pôdy 2 [vynechat] úrodnosť pôd 2 [vynechat]