They Are the main two publications for the "Contemporaryý Pračlovek" collection (Modern-day Caveman). The main notion was to characterize caveman drawings in a very quite simple way and products that had been used At the moment... but also inside our times. The main just one — “Kuchyňa Pračloveka” (Caveman's Kitchen) https://maplepublishers.com/blog/5-steps-towards-self-publishing-a-book/