environmentalists 6 [vynechat] ochrancovia prírody nature conservation 2 [vynechat] ochrana prírody 2 [vynechat] Czechs 1 [vynechat] caves 1 [vynechat] celebrities 1 [vynechat] cestovatelia 1 [vynechat] chemici 1 [vynechat] chemists 1 [vynechat] chránené územia 1 [vynechat] cultural activities 1 [vynechat] culture and society 1 [vynechat] dejiny ochrany prírody 1 [vynechat] herpetologists 1 [vynechat] herpetológovia 1 [vynechat] hikers 1 [vynechat] history of nature conservation 1 [vynechat] jaskyne 1 [vynechat] kultúra a spoločnosť 1 [vynechat] kultúrne podujatia 1 [vynechat] nature 1 [vynechat] osobnosti 1 [vynechat] protected areas 1 [vynechat] príroda 1 [vynechat] speleologists 1 [vynechat] speleológovia 1 [vynechat] travellers 1 [vynechat] turisti 1 [vynechat] Česi 1 [vynechat]