The Review of Bulgarian Geological Society (BGS) is a scientific periodical which publishing starts in 1927. Its main purpose is to popularize the scientific achievements of Bulgarian and foreign geologists. The publishing is financed by the Bulgarian Geological Society by means of membership dues, sponsorship from BAS and other organizations and companies. During its existence either three or one issue has been published per year. The Review of BGS is being distributed among the geological association through annual subscription or exchange in 44 countries.