These Are generally the first two publications for your "Moderný Pračlovek" series (Fashionable Caveman). The main concept was to represent caveman drawings in the quite simple way and products that have been made use of at that time... but also within our days. The primary a single — “Kuchyňa Pračloveka” https://maplepublishers.com/blog/how-to-motivate-more-readers-to-buy-your-book/