These are generally the first two publications for the "Contemporaryý Pračlovek" series (Contemporary Caveman). The key plan was to represent caveman drawings in the quite simple way and products which were being utilised at that time... and also within our days. The initial 1 — “Kuchyňa Pračloveka” (Caveman's Kitchen) — https://maplepublishers.com/blog/ideas-to-create-hype-among-readers-about-your-new-book/