national parks národné parky 20 [vynechat] nature conservation 6 [vynechat] ochrana prírody 6 [vynechat] natural sights 3 [vynechat] prírodné zaujímavosti 3 [vynechat] caves 2 [vynechat] flora 2 [vynechat] flóra 2 [vynechat] jaskyne 2 [vynechat] karst regions 2 [vynechat] krasové oblasti 2 [vynechat] nature and education trails 2 [vynechat] náučné chodníky 2 [vynechat] parlour games 2 [vynechat] regional education trails 2 [vynechat] spoločenské hry 2 [vynechat] vlastivedné chodníky 2 [vynechat] air quality management 1 [vynechat] animal ecology 1 [vynechat] bicycle touring 1 [vynechat] celebrities 1 [vynechat] cykloturistika 1 [vynechat] damage to environment 1 [vynechat] dejiny ochrany prírody 1 [vynechat] devastácia krajiny 1 [vynechat] divoké zvieratá 1 [vynechat] ecological research 1 [vynechat] ecosystems 1 [vynechat] education 1 [vynechat]