dejiny 2 [vynechat] kreativita 2 [vynechat] myslenie 2 [vynechat] objavy a vynálezy 2 [vynechat] vedecké myslenie 2 [vynechat] creative ability 1 [vynechat] discoveries and inventions 1 [vynechat] history 1 [vynechat] scientific and technological development 1 [vynechat] scientific thought 1 [vynechat] thought and thinking 1 [vynechat] vedecko-technicky rozvoj 1 [vynechat] vedecko-technický rozvoj 1 [vynechat]