They are the very first two publications for the "Modern dayý Pračlovek" series (Modern Caveman). The principle concept was to signify caveman drawings inside a quite simple way and products which have been employed at that time... but also inside our times. The 1st a single — “Kuchyňa Pračloveka” (Caveman's https://maplepublishers.com/blog/is-it-essential-to-follow-the-trend-while-writing-a-book/