
Tsys O.P.
Candidate of Historical sciences,
associated proffesor,
Nizhnevartovsk State University
Nizhnevartovsk, Russia
tsysv@rambler.ru
Tsys O.P.
Candidate of Historical sciences,
associated proffesor,
Nizhnevartovsk State University
Nizhnevartovsk, Russia
tsysv@rambler.ru