Prokopiev, A. Yu. Introduction. 2018.
Andrey Yur’evich Prokopiev, doctor of History, professor, St. Petersburg State University (199034, Rossiya, Sankt-Petersburg, Universitetskaia nab., 7/9)
a.prokopiev@spbu.ru
Language: Russian
URL: http://proslogion.ru/41-introduction-2/
