Encyclopedia “A-Z”. BAS publishing house. 1974. Editor-in-Chief Acad. Vl. Georgiev
A one-volume general encyclopedia intended for a wide range of readers. Information on the most significant achievements in all fields of knowledge is presented in a concise and systematized form. Modernly designed for its time, the Encyclopedia “AZ” contains over 21,000 articles, many photographs, drawings, maps and drawings in the text, multi-color maps, single-color and multi-color illustrative appendices.
