They are the first two publications with the "Contemporaryý Pračlovek" series (Modern-day Caveman). The leading idea was to represent caveman drawings in a quite simple way and products which have been employed at that time... but additionally within our days. The initial a single — “Kuchyňa Pračloveka” (Caveman's Kitchen) — https://maplepublishers.com/blog/5-ways-to-improve-your-book-self-publishing-london/