ionizing radiation 1 [vynechat] ionizujúce žiarenie 1 [vynechat] jadrová energia 1 [vynechat] nuclear energy 1 [vynechat] radiation protection 1 [vynechat] radiačná ochrana 1 [vynechat] radioactivity 1 [vynechat] radioecology radon 1 [vynechat] radón 1 [vynechat] rádioaktivita 1 [vynechat] rádioekológia 1 [vynechat]