dejiny civilizácie 1 [vynechat] discoveries and inventions 1 [vynechat] history of civilization 1 [vynechat] horolezci 1 [vynechat] horolezecké expedície 1 [vynechat] intelektuálny život 1 [vynechat] intellectual life 1 [vynechat] mountaineering expeditions 1 [vynechat] mountaineers 1 [vynechat] myslenie 1 [vynechat] objavy a vynálezy 1 [vynechat] technical development 1 [vynechat] technický rozvoj 1 [vynechat] thought and thinking 1 [vynechat]