cesty a pobyt 1 [vynechat] college teachers 1 [vynechat] dejiny vedy 1 [vynechat] fyzici 1 [vynechat] history of science 1 [vynechat] intelektuálny život 1 [vynechat] intellectual life 1 [vynechat] physicists 1 [vynechat] travels and stays 1 [vynechat] universities 1 [vynechat] univerzity 1 [vynechat] vysokoškolskí učitelia 1 [vynechat]