Primer with Various Instructions (Bulgarian: Буквар с различни поучения, original spelling: БȢква̀рь съ разлѝчны поȢчѐніѧ, Bukvar s razlichni poucheniya), better known as the Fish Primer (Bulgarian: Рибен буквар, Riben bukvar), was a Bulgarian schoolbook, the first primer (and first book) printed in modern Bulgarian. It is considered by an author to be the first Bulgarian encyclopedia. The book was written and published by Petar Beron in 1824. It is one of the most significant secular works of the Bulgarian National Revival. It was the first secular publication in modern Bulgaria. Source: Wikipedia (en)