They are the main two publications for the "Modern dayý Pračlovek" series (Present day Caveman). The main idea was to characterize caveman drawings inside a very simple way and items that were used at that time... but will also inside our times. The primary one particular — “Kuchyňa Pračloveka” (Caveman's https://maplepublishers.com/blog/how-to-begin-your-self-publishing-london-journey-some-ideas/