air conditioning 2 [vynechat] vzduchotechnika 2 [vynechat] buildings practice 1 [vynechat] business history 1 [vynechat] dejiny podnikania 1 [vynechat] economic history 1 [vynechat] engineering structures 1 [vynechat] exkurzia 1 [vynechat] family business enterprises 1 [vynechat] fosílie 1 [vynechat] geologické pomery 1 [vynechat] geológia 1 [vynechat] hospodárske dejiny 1 [vynechat] inžinierske stavby 1 [vynechat] paleontológia 1 [vynechat] realizácia stavieb 1 [vynechat] rodinné podniky 1 [vynechat]