Принос към историята на средновековните крепости по Долния Дунав. II. Пиргос, Новград, Свищов и Никопол
Al. Kousev
Contribution to the history of the medieval fortresses along the Lower Danube. II. Pirgos, Novgrad, Svishtov and Nikopol
Abstract
There is an abstract in a foreign language at the end of the .pdf file.
