Проучвания върху морската история и археология на левия понт, 1: Каменните блокове с отвори на българското черноморие
Atanas Orachev
Research on the Marine History and Archeology of the West Point, 1: Stone Blocks with Openings from the Bulgarian Black Coast
Abstract
There is an abstract in a foreign language at the end of the .pdf file.
