NEF “13 Centuries Bulgari” and Art Center of “Contact Club-Germany” on 20 October 2015 in the ethnographic complex “Hadji-Danchoi houses”, Sliven, presented the book by Dobri Nedev “Pebbles in the River”. The story book looks at traditional values of our ancestors such as relief, freedom of thought, sense of honor and justice. The editor of the edition, Viktor Doychinov, was the presenter of the event.